前几天看了一本关于PHP的书,让我感触很深,我先介绍一下PHP的发展史,然后在教大家一个PHP上传多个文件的一个小技巧。让我们先来简单的介绍一下PHP吧!PHP 最初是1994年Rasmus Lerdorf创建的,刚刚开始只是一个简单的用Perl语言编写的程序,用来统计他自己网站的访问者。后来又用C语言重新编写,包括可以访问数据库。
PHP上传多个文件代码实现:
<ol class="dp-xml"> <li class="alt"><span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">php</span></font></strong><span> </span></span></li> <li class=""><span>require_once("include/upload.class.php"); </span></li> <li class="alt"><span>if($_POST["button"]) </span></li> <li class=""><span>{ </span></li> <li class="alt"><span>//print_r($_FILES); </span></li> <li class=""><span>//多个上传 </span></li> <li class="alt"> <span>//$</span><span class="attribute"><font color="#ff0000">upload</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">newTTRUpload</font></span><span>($_FILES,"ANY");//同下 </span> </li> <li class=""><span> </span></li> <li class="alt"> <span>$</span><span class="attribute"><font color="#ff0000">upload</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">newTTRUpload</font></span><span>(array($_FILES["file1"],$_FILES["file2"],$_FILES["file3"],$_FILES["file4"]),"ANY"); </span> </li> <li class=""><span> </span></li> <li class="alt"><span>//单个上传 </span></li> <li class=""> <span>//$</span><span class="attribute"><font color="#ff0000">upload</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">newTTRUpload</font></span><span>($_FILES["file1"]); </span> </li> <li class="alt"> <span>$upload-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>upload(); </span> </li> <li class=""> <span>echo$upload-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>getUploadFileName(); </span> </li> <li class="alt"><span>} </span></li> <li class=""> <span></span><span class="tag"><strong><font color="#006699">?></font></strong></span><span> </span> </li> <li class="alt"> <span>-//W3C//DTDXHTML1.0Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"</span><span class="tag"><strong><font color="#006699">></font></strong></span><span> </span> </li> <li class=""> <span></span><span class="tag"><strong><font color="#006699"></font></strong></span><span class="attribute"><font color="#ff0000">htmlxmlns</font></span><span class="tag-name"><strong><font color="#006699">htmlxmlns</font></strong></span><span>=</span><span class="attribute-value"><font color="#0000ff">"http://www.w3.org/1999/xhtml"</font></span><span class="tag"><strong><font color="#006699">></font></strong></span><span> </span> </li> <li class="alt"> <span></span><strong><font color="#006699"><span class="tag"><span class="tag-name">head</span><span class="tag">></span></span></font></strong><span> </span> </li> <li class=""> <span></span><span class="tag"><strong><font color="#006699"></font></strong></span><span class="attribute"><font color="#ff0000">metahttp-equiv</font></span><span class="tag-name"><strong><font color="#006699">metahttp-equiv</font></strong></span><span>="Content-Type"</span><span class="attribute-value"><font color="#0000ff">content</font></span><span>="text/html;</span><span class="attribute"><font color="#ff0000">charset</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">utf</font></span><span>-8"</span><span class="tag"><strong><font color="#006699">/></font></strong></span><span> </span> </li> <li class="alt"> <span></span><strong><font color="#006699"><span class="tag"><span class="tag-name">title</span><span class="tag">></span></span></font></strong><span>UntitledDocument</span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">title</span><span class="tag">></span></font></strong><span> </span> </li> <li class=""> <span></span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">head</span><span class="tag">></span></font></strong><span> </span> </li> <li class="alt"><span> </span></li> <li class=""> <span></span><strong><font color="#006699"><span class="tag"><span class="tag-name">body</span><span class="tag">></span></span></font></strong><span> </span> </li> <li class="alt"> <span></span><span class="tag"><strong><font color="#006699"></font></strong></span><span class="attribute"><font color="#ff0000">formaction</font></span><span class="tag-name"><strong><font color="#006699">formaction</font></strong></span><span>=""</span><span class="attribute-value"><font color="#0000ff">method</font></span><span>="post"</span><span class="attribute"><font color="#ff0000">enctype</font></span><span>="multipart/form-data"</span><span class="attribute-value"><font color="#0000ff">name</font></span><span>="form1"</span><span class="attribute"><font color="#ff0000">id</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"form1"</font></span><span class="tag"><strong><font color="#006699">></font></strong></span><span> </span> </li> <li class=""> <span></span><span class="tag"><strong><font color="#006699"></font></strong></span><span class="attribute"><font color="#ff0000">inputtype</font></span><span class="tag-name"><strong><font color="#006699">inputtype</font></strong></span><span>="file"</span><span class="attribute-value"><font color="#0000ff">name</font></span><span>="file1"</span><span class="attribute"><font color="#ff0000">id</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"file1"</font></span><span class="tag"><strong><font color="#006699">/></font></strong></span><span> </span> </li> <li class="alt"> <span></span><strong><font color="#006699"><span class="tag"><span class="tag-name">br</span><span class="tag">/></span></span></font></strong><span> </span> </li> <li class=""> <span></span><span class="tag"><strong><font color="#006699"></font></strong></span><span class="attribute"><font color="#ff0000">inputtype</font></span><span class="tag-name"><strong><font color="#006699">inputtype</font></strong></span><span>="file"</span><span class="attribute-value"><font color="#0000ff">name</font></span><span>="file2"</span><span class="attribute"><font color="#ff0000">id</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"file2"</font></span><span class="tag"><strong><font color="#006699">/></font></strong></span><span> </span> </li> <li class="alt"> <span></span><strong><font color="#006699"><span class="tag"><span class="tag-name">br</span><span class="tag">/></span></span></font></strong><span> </span> </li> <li class=""> <span></span><span class="tag"><strong><font color="#006699"></font></strong></span><span class="attribute"><font color="#ff0000">inputtype</font></span><span class="tag-name"><strong><font color="#006699">inputtype</font></strong></span><span>="file"</span><span class="attribute-value"><font color="#0000ff">name</font></span><span>="file3"</span><span class="attribute"><font color="#ff0000">id</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"file3"</font></span><span class="tag"><strong><font color="#006699">/></font></strong></span><span> </span> </li> <li class="alt"> <span></span><strong><font color="#006699"><span class="tag"><span class="tag-name">br</span><span class="tag">/></span></span></font></strong><span> </span> </li> <li class=""> <span></span><span class="tag"><strong><font color="#006699"></font></strong></span><span class="attribute"><font color="#ff0000">inputtype</font></span><span class="tag-name"><strong><font color="#006699">inputtype</font></strong></span><span>="file"</span><span class="attribute-value"><font color="#0000ff">name</font></span><span>="file4"</span><span class="attribute"><font color="#ff0000">id</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"file4"</font></span><span class="tag"><strong><font color="#006699">/></font></strong></span><span> </span> </li> <li class="alt"> <span></span><strong><font color="#006699"><span class="tag"><span class="tag-name">br</span><span class="tag">/></span></span></font></strong><span> </span> </li> <li class=""> <span></span><span class="tag"><strong><font color="#006699"></font></strong></span><span class="attribute"><font color="#ff0000">inputtype</font></span><span class="tag-name"><strong><font color="#006699">inputtype</font></strong></span><span>="submit"</span><span class="attribute-value"><font color="#0000ff">name</font></span><span>="button"</span><span class="attribute"><font color="#ff0000">id</font></span><span>="button"</span><span class="attribute-value"><font color="#0000ff">value</font></span><span>="Submit"</span><span class="tag"><strong><font color="#006699">/></font></strong></span><span> </span> </li> <li class="alt"> <span></span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">form</span><span class="tag">></span></font></strong><span> </span> </li> <li class=""> <span></span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">body</span><span class="tag">></span></font></strong><span> </span> </li> <li class="alt"> <span></span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">html</span><span class="tag">></span></font></strong><span> </span> </li> <li class=""><span> </span></li> <li class="alt"> <span></span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">php</span></font></strong><span> </span> </li> <li class=""><span>classTTRUploadextendsError </span></li> <li class="alt"><span>{ </span></li> <li class=""> <span></span><span class="attribute"><font color="#ff0000">constfilesize</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">81200000</font></span><span>; </span> </li> <li class="alt"> <span>private$</span><span class="attribute"><font color="#ff0000">uploadpath</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"uploadfile/"</font></span><span>; </span> </li> <li class=""> <span>private$</span><span class="attribute"><font color="#ff0000">savepath</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">null</font></span><span>; </span> </li> <li class="alt"> <span>private$</span><span class="attribute"><font color="#ff0000">uploadfilename</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">null</font></span><span>;//单个文件为文件名,批量文件为xxxx|xxxx格式,请注意 </span> </li> <li class=""> <span>private$</span><span class="attribute"><font color="#ff0000">ext</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">array</font></span><span>("jpg","gif","png"); </span> </li> <li class="alt"> <span>private$</span><span class="attribute"><font color="#ff0000">error</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">null</font></span><span>; </span> </li> <li class=""> <span>private$</span><span class="attribute"><font color="#ff0000">file</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">null</font></span><span>; </span> </li> <li class="alt"> <span>private$</span><span class="attribute"><font color="#ff0000">uploadtype</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">null</font></span><span>; </span> </li> <li class=""> <span>private$</span><span class="attribute"><font color="#ff0000">filename</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">null</font></span><span>; </span> </li> <li class="alt"><span> </span></li> <li class=""><span>//构造函数,$type:ONE单个上传ANY批量上传; </span></li> <li class="alt"> <span>publicfunction__construct($file,$</span><span class="attribute"><font color="#ff0000">type</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"ONE"</font></span><span>) </span> </li> <li class=""><span>{ </span></li> <li class="alt"><span>if($type!="ONE"&&$type!="ANY") </span></li> <li class=""><span>{ </span></li> <li class="alt"> <span>echo"</span><span class="tag"><strong><font color="#006699"></font></strong></span><span class="attribute"><font color="#ff0000">scriptlanguage</font></span><span class="tag-name"><strong><font color="#006699">scriptlanguage</font></strong></span><span>=</span><span class="attribute-value"><font color="#0000ff">'javascript'</font></span><span class="tag"><strong><font color="#006699">></font></strong></span><span>alert('初始化请选择ONE或者ANY')</span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">script</span><span class="tag">></span></font></strong><span>"; </span> </li> <li class=""><span>exit; </span></li> <li class="alt"><span>} </span></li> <li class=""> <span>$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span class="attribute"><font color="#ff0000">uploadtype</font></span><span>=$type; </span> </li> <li class="alt"> <span>$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span class="attribute"><font color="#ff0000">file</font></span><span>=$file; </span> </li> <li class=""><span>} </span></li> <li class="alt"><span> </span></li> <li class=""><span>privatefunctioncreateFileName() </span></li> <li class="alt"><span>{ </span></li> <li class=""> <span>return$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span class="attribute"><font color="#ff0000">filename</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"TTR_"</font></span><span>.time().$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>getRandomN(4); </span> </li> <li class="alt"><span>} </span></li> <li class=""><span> </span></li> <li class="alt"><span>privatefunctiongetUploadPath() </span></li> <li class=""><span>{ </span></li> <li class="alt"> <span>if(substr($this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>uploadpath,-1,1)!="/") </span> </li> <li class=""><span>{ </span></li> <li class="alt"> <span>$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span class="attribute"><font color="#ff0000">savepath</font></span><span>=$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>uploadpath."/".date("Ym"); </span> </li> <li class=""><span>}else{ </span></li> <li class="alt"> <span>$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span class="attribute"><font color="#ff0000">savepath</font></span><span>=$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>uploadpath.date("Ym"); </span> </li> <li class=""><span>} </span></li> <li class="alt"> <span>$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span class="attribute"><font color="#ff0000">savepath</font></span><span>=$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>getFolder($this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>savepath); </span> </li> <li class=""><span>returntrue; </span></li> <li class="alt"><span>} </span></li> <li class=""><span> </span></li> <li class="alt"><span>privatefunctiongetFileExt($tempfilename) </span></li> <li class=""><span>{ </span></li> <li class="alt"><span>returnend(explode(".",$tempfilename)); </span></li> <li class=""><span>} </span></li> <li class="alt"><span> </span></li> <li class=""><span>privatefunctiongetExt() </span></li> <li class="alt"><span>{ </span></li> <li class=""> <span>if(in_array(strtolower($this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>getFileExt($tempfilename)),$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>ext)) </span> </li> <li class="alt"><span>{ </span></li> <li class=""><span>returntrue; </span></li> <li class="alt"><span>}else{ </span></li> <li class=""><span>returnfalse; </span></li> <li class="alt"><span>} </span></li> <li class=""><span>} </span></li> <li class="alt"><span> </span></li> <li class=""><span>privatefunctiongetFolder($folder) </span></li> <li class="alt"><span>{ </span></li> <li class=""><span>if(!is_dir($folder)) </span></li> <li class="alt"><span>{ </span></li> <li class=""><span>mkdir($folder); </span></li> <li class="alt"><span>} </span></li> <li class=""><span>return$folder."/"; </span></li> <li class="alt"><span>} </span></li> <li class=""><span> </span></li> <li class="alt"><span> </span></li> <li class=""><span>publicfunctionupload() </span></li> <li class="alt"><span>{ </span></li> <li class=""> <span>if($this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span class="attribute"><font color="#ff0000">uploadtype</font></span><span>=="ONE") </span> </li> <li class="alt"><span>{ </span></li> <li class=""><span> </span></li> <li class="alt"><span> </span></li> <li class=""> <span>if($this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>getExt($this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>file["type"])) </span> </li> <li class="alt"><span>{ </span></li> <li class=""><span> </span></li> <li class="alt"><span>parent::errorExt(); </span></li> <li class=""><span> </span></li> <li class="alt"> <span>}elseif($this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>file["size"]</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>self::filesize){ </span> </li> <li class=""><span> </span></li> <li class="alt"><span>parent::errorFileSize(); </span></li> <li class=""><span> </span></li> <li class="alt"> <span>}elseif(!$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>getUploadPath()){ </span> </li> <li class=""><span> </span></li> <li class="alt"><span>parent::errorUploadPath(); </span></li> <li class=""><span> </span></li> <li class="alt"><span>}else{ </span></li> <li class=""> <span>$</span><span class="attribute"><font color="#ff0000">filenametemp</font></span><span>=$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>createFileName(); </span> </li> <li class="alt"> <span>$</span><span class="attribute"><font color="#ff0000">filename</font></span><span>=$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>savepath.$filenametemp.".".$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>getFileExt($this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>file["name"]); </span> </li> <li class=""> <span>if(move_uploaded_file($this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>file["tmp_name"],$filename)) </span> </li> <li class="alt"><span>{ </span></li> <li class=""> <span>$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span class="attribute"><font color="#ff0000">uploadfilename</font></span><span>=$filenametemp; </span> </li> <li class="alt"><span>parent::okMoved(); </span></li> <li class=""><span> </span></li> <li class="alt"><span> </span></li> <li class=""><span>}else{ </span></li> <li class="alt"><span>parent::errorMoveUpload(); </span></li> <li class=""><span>} </span></li> <li class="alt"><span>} </span></li> <li class=""> <span>}elseif($this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span class="attribute"><font color="#ff0000">uploadtype</font></span><span>=="ANY"){ </span> </li> <li class="alt"><span> </span></li> <li class=""> <span>for($</span><span class="attribute"><font color="#ff0000">i</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">0</font></span><span>;$i</span><strong><font color="#006699"><span class="tag"><span class="tag-name">count</span></span></font></strong><span>($this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>file);$i++) </span> </li> <li class="alt"><span>{ </span></li> <li class=""><span> </span></li> <li class="alt"> <span>if($this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>getExt($this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>file[$i]["type"])) </span> </li> <li class=""><span>{ </span></li> <li class="alt"><span>parent::errorExt(); </span></li> <li class=""><span> </span></li> <li class="alt"> <span>}elseif($this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>file[$i]["size"]</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>self::filesize){ </span> </li> <li class=""><span> </span></li> <li class="alt"><span>parent::errorFileSize(); </span></li> <li class=""><span> </span></li> <li class="alt"> <span>}elseif(!$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>getUploadPath()){ </span> </li> <li class=""><span> </span></li> <li class="alt"><span>parent::errorUploadPath(); </span></li> <li class=""><span> </span></li> <li class="alt"><span>}else{ </span></li> <li class=""> <span>$</span><span class="attribute"><font color="#ff0000">filenametemp</font></span><span>=$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>createFileName(); </span> </li> <li class="alt"> <span>$</span><span class="attribute"><font color="#ff0000">filename</font></span><span>=$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>savepath.$filenametemp.".".$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>getFileExt($this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>file[$i]["name"]); </span> </li> <li class=""> <span>if(move_uploaded_file($this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>file[$i]["tmp_name"],$filename)) </span> </li> <li class="alt"><span>{ </span></li> <li class=""> <span>$</span><span class="attribute"><font color="#ff0000">str.</font></span><span>=$filenametemp."|"; </span> </li> <li class="alt"><span> </span></li> <li class=""><span>}else{ </span></li> <li class="alt"><span>parent::errorMoveUpload(); </span></li> <li class=""><span>} </span></li> <li class="alt"><span> </span></li> <li class=""><span>} </span></li> <li class="alt"><span> </span></li> <li class=""><span>} </span></li> <li class="alt"> <span>$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span class="attribute"><font color="#ff0000">uploadfilename</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">substr</font></span><span>($str,0,strlen($str)-1); </span> </li> <li class=""><span>parent::okMoved(); </span></li> <li class="alt"><span>} </span></li> <li class=""><span>} </span></li> <li class="alt"><span> </span></li> <li class=""><span>publicfunctiongetUploadFileName() </span></li> <li class="alt"><span>{ </span></li> <li class=""> <span>return$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>uploadfilename; </span> </li> <li class="alt"><span>} </span></li> <li class=""><span> </span></li> <li class="alt"><span>publicfunctionsetUploadPath($path) </span></li> <li class=""><span>{ </span></li> <li class="alt"> <span>$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span class="attribute"><font color="#ff0000">uploadpath</font></span><span>=$path; </span> </li> <li class=""><span>} </span></li> <li class="alt"><span> </span></li> <li class=""><span> </span></li> <li class="alt"><span>privatefunctiongetRandomN($n) </span></li> <li class=""><span>{ </span></li> <li class="alt"> <span>if($n</span><strong><font color="#006699"><span class="tag"><span class="tag-name">1</span></span></font></strong><span>||$n</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>10)return""; </span> </li> <li class=""><span> </span></li> <li class="alt"> <span>$</span><span class="attribute"><font color="#ff0000">ary_num</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">array</font></span><span>(0,1,2,3,4,5,6,7,8,9); </span> </li> <li class=""> <span>$</span><span class="attribute"><font color="#ff0000">return</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">""</font></span><span>; </span> </li> <li class="alt"> <span>for($</span><span class="attribute"><font color="#ff0000">i</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">0</font></span><span>;$i</span><span class="tag"><strong><font color="#006699"></font></strong></span><span>$n;$i++) </span> </li> <li class=""><span>{ </span></li> <li class="alt"> <span>$</span><span class="attribute-value"><font color="#0000ff">rand</font></span><span class="attribute"><font color="#ff0000">randn</font></span><span>=rand(0,9-$i); </span> </li> <li class=""> <span>$</span><span class="attribute"><font color="#ff0000">return.</font></span><span>=$ary_num[$randn]; </span> </li> <li class="alt"><span>$ary_num[$randn]=$ary_num[9-$i]; </span></li> <li class=""><span>} </span></li> <li class="alt"><span>return$return; </span></li> <li class=""><span>} </span></li> <li class="alt"><span> </span></li> <li class=""><span> </span></li> <li class="alt"><span> </span></li> <li class=""><span>publicfunction__destruct() </span></li> <li class="alt"><span>{ </span></li> <li class=""> <span>$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span class="attribute"><font color="#ff0000">uploadfilename</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">null</font></span><span>; </span> </li> <li class="alt"> <span>$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span class="attribute"><font color="#ff0000">uploadtype</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">null</font></span><span>; </span> </li> <li class=""> <span>$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span class="attribute"><font color="#ff0000">file</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">null</font></span><span>; </span> </li> <li class="alt"> <span>$this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span class="attribute"><font color="#ff0000">savepath</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">null</font></span><span>; </span> </li> <li class=""><span>} </span></li> <li class="alt"><span> </span></li> <li class=""><span>} </span></li> <li class="alt"><span> </span></li> <li class=""><span>classError </span></li> <li class="alt"><span>{ </span></li> <li class=""><span>publicstaticfunctionerrorFileSize() </span></li> <li class="alt"><span>{ </span></li> <li class=""><span>echo"超出最大上传限制"; </span></li> <li class="alt"><span>} </span></li> <li class=""><span> </span></li> <li class="alt"><span>publicstaticfunctionerrorExt() </span></li> <li class=""><span>{ </span></li> <li class="alt"><span>echo"此类文件不允许上传"; </span></li> <li class=""><span>} </span></li> <li class="alt"><span> </span></li> <li class=""><span>publicstaticfunctionerrorUploadPath() </span></li> <li class="alt"><span>{ </span></li> <li class=""><span>echo"上传路径不正确"; </span></li> <li class="alt"><span>} </span></li> <li class=""><span> </span></li> <li class="alt"><span>publicstaticfunctionerrorMoveUpload() </span></li> <li class=""><span>{ </span></li> <li class="alt"><span>echo"上传失败"; </span></li> <li class=""><span>} </span></li> <li class="alt"><span> </span></li> <li class=""><span>publicstaticfunctionokMoved() </span></li> <li class="alt"><span>{ </span></li> <li class=""><span>echo"上传成功!"; </span></li> <li class="alt"><span>} </span></li> <li class=""><span> </span></li> <li class="alt"><span>publicstaticfunctionokArrayMoved() </span></li> <li class=""><span>{ </span></li> <li class="alt"><span>echo"上传成功!"; </span></li> <li class=""><span>} </span></li> </ol>

PHP는 현대 웹 개발, 특히 컨텐츠 관리 및 전자 상거래 플랫폼에서 중요합니다. 1) PHP는 Laravel 및 Symfony와 같은 풍부한 생태계와 강력한 프레임 워크 지원을 가지고 있습니다. 2) Opcache 및 Nginx를 통해 성능 최적화를 달성 할 수 있습니다. 3) PHP8.0은 성능을 향상시키기 위해 JIT 컴파일러를 소개합니다. 4) 클라우드 네이티브 애플리케이션은 Docker 및 Kubernetes를 통해 배포되어 유연성과 확장 성을 향상시킵니다.

PHP는 특히 빠른 개발 및 동적 컨텐츠를 처리하는 데 웹 개발에 적합하지만 데이터 과학 및 엔터프라이즈 수준의 애플리케이션에는 적합하지 않습니다. Python과 비교할 때 PHP는 웹 개발에 더 많은 장점이 있지만 데이터 과학 분야에서는 Python만큼 좋지 않습니다. Java와 비교할 때 PHP는 엔터프라이즈 레벨 애플리케이션에서 더 나빠지지만 웹 개발에서는 더 유연합니다. JavaScript와 비교할 때 PHP는 백엔드 개발에서 더 간결하지만 프론트 엔드 개발에서는 JavaScript만큼 좋지 않습니다.

PHP와 Python은 각각 고유 한 장점이 있으며 다양한 시나리오에 적합합니다. 1.PHP는 웹 개발에 적합하며 내장 웹 서버 및 풍부한 기능 라이브러리를 제공합니다. 2. Python은 간결한 구문과 강력한 표준 라이브러리가있는 데이터 과학 및 기계 학습에 적합합니다. 선택할 때 프로젝트 요구 사항에 따라 결정해야합니다.

PHP는 서버 측에서 널리 사용되는 스크립팅 언어이며 특히 웹 개발에 적합합니다. 1.PHP는 HTML을 포함하고 HTTP 요청 및 응답을 처리 할 수 있으며 다양한 데이터베이스를 지원할 수 있습니다. 2.PHP는 강력한 커뮤니티 지원 및 오픈 소스 리소스를 통해 동적 웹 컨텐츠, 프로세스 양식 데이터, 액세스 데이터베이스 등을 생성하는 데 사용됩니다. 3. PHP는 해석 된 언어이며, 실행 프로세스에는 어휘 분석, 문법 분석, 편집 및 실행이 포함됩니다. 4. PHP는 사용자 등록 시스템과 같은 고급 응용 프로그램을 위해 MySQL과 결합 할 수 있습니다. 5. PHP를 디버깅 할 때 error_reporting () 및 var_dump ()와 같은 함수를 사용할 수 있습니다. 6. 캐싱 메커니즘을 사용하여 PHP 코드를 최적화하고 데이터베이스 쿼리를 최적화하며 내장 기능을 사용하십시오. 7

PHP가 많은 웹 사이트에서 선호되는 기술 스택 인 이유에는 사용 편의성, 강력한 커뮤니티 지원 및 광범위한 사용이 포함됩니다. 1) 배우고 사용하기 쉽고 초보자에게 적합합니다. 2) 거대한 개발자 커뮤니티와 풍부한 자원이 있습니다. 3) WordPress, Drupal 및 기타 플랫폼에서 널리 사용됩니다. 4) 웹 서버와 밀접하게 통합하여 개발 배포를 단순화합니다.

PHP는 현대적인 프로그래밍, 특히 웹 개발 분야에서 강력하고 널리 사용되는 도구로 남아 있습니다. 1) PHP는 사용하기 쉽고 데이터베이스와 완벽하게 통합되며 많은 개발자에게 가장 먼저 선택됩니다. 2) 동적 컨텐츠 생성 및 객체 지향 프로그래밍을 지원하여 웹 사이트를 신속하게 작성하고 유지 관리하는 데 적합합니다. 3) 데이터베이스 쿼리를 캐싱하고 최적화함으로써 PHP의 성능을 향상시킬 수 있으며, 광범위한 커뮤니티와 풍부한 생태계는 오늘날의 기술 스택에 여전히 중요합니다.

PHP에서는 약한 참조가 약한 회의 클래스를 통해 구현되며 쓰레기 수집가가 물체를 되 찾는 것을 방해하지 않습니다. 약한 참조는 캐싱 시스템 및 이벤트 리스너와 같은 시나리오에 적합합니다. 물체의 생존을 보장 할 수 없으며 쓰레기 수집이 지연 될 수 있음에 주목해야합니다.

\ _ \ _ 호출 메소드를 사용하면 객체를 함수처럼 호출 할 수 있습니다. 1. 객체를 호출 할 수 있도록 메소드를 호출하는 \ _ \ _ 정의하십시오. 2. $ obj (...) 구문을 사용할 때 PHP는 \ _ \ _ invoke 메소드를 실행합니다. 3. 로깅 및 계산기, 코드 유연성 및 가독성 향상과 같은 시나리오에 적합합니다.


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