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学習メモ:PHP画像アップロードコードの詳細解説_PHPチュートリアル

WBOY
WBOYオリジナル
2016-07-15 13:27:11733ブラウズ

画像をアップロードするためのコードの書き方を知りたいですか?詳しく分析させてください。 PHP を使用すると、特定のタスクを達成するための複数の方法が常にあります。ファイルのアップロードを例に挙げてみましょう。もちろん、従来の方法で HTTP ファイル アップロードを使用し、ファイルを Web サーバー ディスクに直接転送することもできます。

FTP プロトコルを使用して、ローカル ハード ドライブから Web サーバーに、次に FTP サーバーにという 2 つの手順でアップロードを完了する、より変わった方法でアップロードすることもできます。 PHP は FTP アップロードと HTTP アップロードの両方をネイティブにサポートしているため、アプリケーションの設計ニーズに基づいて最適な選択を行うことができます。 PHP の FTP 関数を使用してファイルを転送することは、従来の FTP クライアントを使用することとほぼ同じです。関数名も標準の FTP コマンドに似ていることがわかります。 PHP で画像をアップロードするためのコードの小さな例を紹介します。ぜひ、一緒に学びましょう。 !

PHP アップロード画像コード:

<ol class="dp-xml">
<li class="alt"><span><span class="tag"><?</SPAN><SPAN class=tag-name>phpsession_start</SPAN><SPAN>();</SPAN><SPAN class=tag>?></span><span> </span></span></li>
<li class=""><span> </span></li>
<li class="alt">
<span></span><span class="tag"><?</SPAN><SPAN class=tag-name>php</SPAN><SPAN> </SPAN></SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute>id</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>mysql_connect</SPAN><SPAN>('localhost','root','585858');  </SPAN></SPAN><LI class=alt><SPAN>mysql_select_db("okhwyy",$id);  </SPAN><LI class=""><SPAN>mysql_query("setnamesgb2312");  </SPAN><LI class=alt><SPAN></SPAN><SPAN class=tag>?></span><span> </span>
</li>
<li class="">
<span></span><span class="tag"><</SPAN><SPAN class=tag-name>html</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"><</SPAN><SPAN class=tag-name>head</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="">
<span></span><span class="tag"><</SPAN><SPAN class=attribute>metahttp-equiv</SPAN><SPAN class=tag-name>metahttp-equiv</SPAN><SPAN>="Content-Type"</SPAN><SPAN class=attribute-value>c</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"><</SPAN><SPAN class=tag-name>title</SPAN><SPAN class=tag>></span><span>限制上传图片的格式</span><span class="tag"></</SPAN><SPAN class=tag-name>title</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="">
<span></span><span class="tag"><</SPAN><SPAN class=attribute>styletype</SPAN><SPAN class=tag-name>styletype</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>"text/css"</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt">
<span><!--  </SPAN><LI class=""><SPAN>.style1{  </SPAN><LI class=alt><SPAN>font-size:14px;  </SPAN><LI class=""><SPAN>font-family:"华文行楷";  </SPAN><LI class=alt><SPAN>}  </SPAN><LI class=""><SPAN>.style4{font-size:12px;font-weight:bold;}  </SPAN><LI class=alt><SPAN>--</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="">
<span></span><span class="tag"></</SPAN><SPAN class=tag-name>style</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"></</SPAN><SPAN class=tag-name>head</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="">
<span></span><span class="tag"><</SPAN><SPAN class=tag-name>body</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"><</SPAN><SPAN class=attribute>tablewidth</SPAN><SPAN class=tag-name>tablewidth</SPAN><SPAN>="406"</SPAN><SPAN class=attribute-value>height</SPAN><SPAN>="129"</SPAN><SPAN class=attribute>border</SPAN><SPAN>="0"</SPAN><SPAN class=attribute-value>align</SPAN><SPAN>="center"</SPAN><SPAN class=attribute>cellpadding</SPAN><SPAN>="0"</SPAN><SPAN class=attribute-value>cellspacing</SPAN><SPAN>="0"</SPAN><SPAN class=attribute>background</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>""</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="">
<span></span><span class="tag"><</SPAN><SPAN class=tag-name>tr</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"><</SPAN><SPAN class=attribute>tdwidth</SPAN><SPAN class=tag-name>tdwidth</SPAN><SPAN>="106"</SPAN><SPAN class=attribute-value>height</SPAN><SPAN>="40"</SPAN><SPAN class=tag>></span><span class="tag"></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="">
<span></span><span class="tag"><</SPAN><SPAN class=attribute>tdwidth</SPAN><SPAN class=tag-name>tdwidth</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>"196"</SPAN><SPAN class=tag>></span><span class="tag"></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"><</SPAN><SPAN class=attribute>tdwidth</SPAN><SPAN class=tag-name>tdwidth</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>"31"</SPAN><SPAN class=tag>></span><span class="tag"></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="">
<span></span><span class="tag"></</SPAN><SPAN class=tag-name>tr</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"><</SPAN><SPAN class=attribute>formname</SPAN><SPAN class=tag-name>formname</SPAN><SPAN>="form1"</SPAN><SPAN class=attribute-value>method</SPAN><SPAN>="post"</SPAN><SPAN class=attribute>action</SPAN><SPAN>=""</SPAN><SPAN class=attribute-value>enctype</SPAN><SPAN>="multipart/form-data"</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="">
<span></span><span class="tag"><</SPAN><SPAN class=tag-name>tr</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"><</SPAN><SPAN class=attribute>tdheight</SPAN><SPAN class=tag-name>tdheight</SPAN><SPAN>="32"</SPAN><SPAN class=attribute-value>align</SPAN><SPAN>="right"</SPAN><SPAN class=tag>></span><span class="tag"><</SPAN><SPAN class=attribute>spanclass</SPAN><SPAN class=tag-name>spanclass</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>"style1"</SPAN><SPAN class=tag>></span><span>图片路径</span><span class="tag"></</SPAN><SPAN class=tag-name>span</SPAN><SPAN class=tag>></span><span>:</span><span class="tag"></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="">
<span></span><span class="tag"><</SPAN><SPAN class=attribute>tdvalign</SPAN><SPAN class=tag-name>tdvalign</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>"middle"</SPAN><SPAN class=tag>></span><span class="tag"><</SPAN><SPAN class=attribute>inputname</SPAN><SPAN class=tag-name>inputname</SPAN><SPAN>="images"</SPAN><SPAN class=attribute-value>type</SPAN><SPAN>="file"</SPAN><SPAN class=attribute>id</SPAN><SPAN>="images2"</SPAN><SPAN class=attribute-value>size</SPAN><SPAN>="15"</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"><</SPAN><SPAN class=attribute>inputtype</SPAN><SPAN class=tag-name>inputtype</SPAN><SPAN>="hidden"</SPAN><SPAN class=attribute-value>name</SPAN><SPAN>="MAX_FILE_SIZE"</SPAN><SPAN class=attribute>value</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>"30000"</SPAN><SPAN class=tag>></span><span class="tag"></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="">
<span></span><span class="tag"><</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></span><span class="tag"></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"></</SPAN><SPAN class=tag-name>tr</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="">
<span></span><span class="tag"><</SPAN><SPAN class=tag-name>tr</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"><</SPAN><SPAN class=attribute>tdheight</SPAN><SPAN class=tag-name>tdheight</SPAN><SPAN>="44"</SPAN><SPAN class=attribute-value>align</SPAN><SPAN>="right"</SPAN><SPAN class=attribute>valign</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>"middle"</SPAN><SPAN class=tag>></span><span class="tag"><</SPAN><SPAN class=attribute>spanclass</SPAN><SPAN class=tag-name>spanclass</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>"style4"</SPAN><SPAN class=tag>></span><span>图片的格式</span><span class="tag"></</SPAN><SPAN class=tag-name>span</SPAN><SPAN class=tag>></span><span>:</span><span class="tag"></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="">
<span></span><span class="tag"><</SPAN><SPAN class=attribute>tdvalign</SPAN><SPAN class=tag-name>tdvalign</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>"middle"</SPAN><SPAN class=tag>></span><span class="tag"><</SPAN><SPAN class=attribute>spanclass</SPAN><SPAN class=tag-name>spanclass</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>"style4"</SPAN><SPAN class=tag>></span><span>(.jpg)</span><span class="tag"></</SPAN><SPAN class=tag-name>span</SPAN><SPAN class=tag>></span><span class="tag"><</SPAN><SPAN class=attribute>inputtype</SPAN><SPAN class=tag-name>inputtype</SPAN><SPAN>="submit"</SPAN><SPAN class=attribute-value>name</SPAN><SPAN>="Submit"</SPAN><SPAN class=attribute>value</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>"提交"</SPAN><SPAN class=tag>></span><span class="tag"></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"><</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></span><span class="tag"></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="">
<span></span><span class="tag"></</SPAN><SPAN class=tag-name>tr</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"></</SPAN><SPAN class=tag-name>form</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="">
<span></span><span class="tag"><</SPAN><SPAN class=tag-name>tr</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"><</SPAN><SPAN class=attribute>tdheight</SPAN><SPAN class=tag-name>tdheight</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>"10"</SPAN><SPAN class=tag>></span><span class="tag"></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="">
<span></span><span class="tag"><</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></span><span class="tag"></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"><</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></span><span class="tag"></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="">
<span></span><span class="tag"></</SPAN><SPAN class=tag-name>tr</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"></</SPAN><SPAN class=tag-name>table</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="">
<span></span><span class="tag"><</SPAN><SPAN class=attribute>tablewidth</SPAN><SPAN class=tag-name>tablewidth</SPAN><SPAN>="406"</SPAN><SPAN class=attribute-value>height</SPAN><SPAN>="129"</SPAN><SPAN class=attribute>border</SPAN><SPAN>="1"</SPAN><SPAN class=attribute-value>align</SPAN><SPAN>="center"</SPAN><SPAN class=attribute>cellpadding</SPAN><SPAN>="0"</SPAN><SPAN class=attribute-value>cellspacing</SPAN><SPAN>="0"</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"><?</SPAN><SPAN class=tag-name>php</SPAN><SPAN> </SPAN></SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute>query</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>"select*fromtb_image2whereidorderbydatadesclimit2"</SPAN><SPAN>;  </SPAN></SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute>result</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>mysql_query</SPAN><SPAN>($query);  </SPAN></SPAN><LI class=""><SPAN>if($result){  </SPAN><LI class=alt><SPAN>while($</SPAN><SPAN class=attribute>row</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>mysql_fetch_array</SPAN><SPAN>($result)){  </SPAN></SPAN><LI class=""><SPAN></SPAN><SPAN class=tag>?></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"><</SPAN><SPAN class=tag-name>tr</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="">
<span></span><span class="tag"><</SPAN><SPAN class=attribute>tdwidth</SPAN><SPAN class=tag-name>tdwidth</SPAN><SPAN>="106"</SPAN><SPAN class=attribute-value>align</SPAN><SPAN>="center"</SPAN><SPAN class=tag>></span><span class="tag"><?</SPAN><SPAN class=tag-name>phpecho</SPAN><SPAN>$row[data];</SPAN><SPAN class=tag>?></span><span class="tag"></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"><</SPAN><SPAN class=attribute>tdwidth</SPAN><SPAN class=tag-name>tdwidth</SPAN><SPAN>="196"</SPAN><SPAN class=attribute-value>align</SPAN><SPAN>="center"</SPAN><SPAN class=tag>></span><span class="tag"><</SPAN><SPAN class=attribute>imgsrc</SPAN><SPAN class=tag-name>imgsrc</SPAN><SPAN>="</SPAN><SPAN class=tag><?</SPAN><SPAN class=tag-name>phpecho</SPAN><SPAN>$row[path];</SPAN><SPAN class=tag>?></span><span>"</span><span class="attribute-value">width</span><span>="200"</span><span class="attribute">height</span><span>=</span><span class="attribute-value">"120"</span><span class="tag">></span><span class="tag"></</SPAN><SPAN class=tag-name>td</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="">
<span></span><span class="tag"></</SPAN><SPAN class=tag-name>tr</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"><?</SPAN><SPAN class=tag-name>php</SPAN><SPAN>}}</SPAN><SPAN class=tag>?></span><span> </span>
</li>
<li class="">
<span></span><span class="tag"></</SPAN><SPAN class=tag-name>table</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt"><span> </span></li>
<li class="">
<span></span><span class="tag"></</SPAN><SPAN class=tag-name>body</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"></</SPAN><SPAN class=tag-name>html</SPAN><SPAN class=tag>></span><span> </span>
</li>
<li class=""><span> </span></li>
<li class="alt">
<span></span><span class="tag"><?</SPAN><SPAN class=tag-name>php</SPAN><SPAN> </SPAN></SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute>Submit</SPAN><SPAN>=$_POST[Submit];  </SPAN></SPAN><LI class=alt><SPAN>if($Submit){  </SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute>image</SPAN><SPAN>=$_FILES['images']['name'];  </SPAN></SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute>date</SPAN><SPAN class=attribute-value>date</SPAN><SPAN>=date("Y-m-d");  </SPAN></SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute>path</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>"upfiles/"</SPAN><SPAN>.$_FILES['images']['name'];  </SPAN></SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute>type</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>strstr</SPAN><SPAN>($path,".");  </SPAN></SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute>size</SPAN><SPAN>=$_FILES['images']['size'];  </SPAN></SPAN><LI class=alt><SPAN>if($size</SPAN><SPAN class=tag>></span><span>1000000){echo"</span><span class="tag"><</SPAN><SPAN class=tag-name>script</SPAN><SPAN class=tag>></span><span>alert('上传容量超限');history.back();</span><span class="tag"></</SPAN><SPAN class=tag-name>script</SPAN><SPAN class=tag>></span><span>";}  </span>
</li>
<li class="">
<span>elseif($type!=".jpg"){echo"</span><span class="tag"><</SPAN><SPAN class=tag-name>script</SPAN><SPAN class=tag>></span><span>alert('上传类型不对');history.back();</span><span class="tag"></</SPAN><SPAN class=tag-name>script</SPAN><SPAN class=tag>></span><span>";}  </span>
</li>
<li class="alt"><span>elseif(move_uploaded_file($_FILES['images']['tmp_name'],$path)){  </span></li>
<li class="">
<span>$</span><span class="attribute">query</span><span>=</span><span class="attribute-value">"insertintotb_image2(image_name,path,data)values('$image','$path','$date')"</span><span>;  </span>
</li>
<li class="alt">
<span>$</span><span class="attribute">result</span><span>=</span><span class="attribute-value">mysql_query</span><span>($query)ordie(mysql_error());  </span>
</li>
<li class=""><span>if($result){  </span></li>
<li class="alt"><span>echo"上传成功!";  </span></li>
<li class="">
<span>echo"</span><span class="tag"><</SPAN><SPAN class=attribute>metahttp-equiv</SPAN><SPAN class=tag-name>metahttp-equiv</SPAN><SPAN>=&#92;"Refresh&#92;"</SPAN><SPAN class=attribute>content</SPAN><SPAN>=&#92;"3;</SPAN><SPAN class=attribute>url</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>index</SPAN><SPAN>.php&#92;"</SPAN><SPAN class=tag>></span><span>";  </span>
</li>
<li class="alt"><span>}  </span></li>
<li class=""><span>else{  </span></li>
<li class="alt"><span>echo"上传失败!";  </span></li>
<li class="">
<span>echo"</span><span class="tag"><</SPAN><SPAN class=attribute>metahttp-equiv</SPAN><SPAN class=tag-name>metahttp-equiv</SPAN><SPAN>=&#92;"Refresh&#92;"</SPAN><SPAN class=attribute>content</SPAN><SPAN>=&#92;"3;</SPAN><SPAN class=attribute>url</SPAN><SPAN>=</SPAN><SPAN class=attribute-value>index</SPAN><SPAN>.php&#92;"</SPAN><SPAN class=tag>></span><span>";  </span>
</li>
<li class="alt"><span>}}}  </span></li>
<li class=""><span> </span></li>
<li class="alt">
<span></span><span class="tag">?></span><span> </span>
</li>
</ol>

www.bkjia.comtru​​ehttp://www.bkjia.com/PHPjc/446551.html技術記事画像をアップロードするためのコードの書き方を知りたいですか? 以下で詳しく分析してみましょう。 PHP を使用すると、特定のタスクを達成するための複数の方法が常にあります。テキストを取ってみましょう...
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