Home > Article > Backend Development > PHP multiple file upload analysis_PHP tutorial

PHP multiple file upload analysis_PHP tutorial

WBOYOriginal: 2016-07-20 11:05:57772browse

Summary of personal understanding of

PHP multi-file upload

Multiple file upload is a basic application in PHP. I would like to introduce the relevant knowledge to you in detail. My level is limited, so please give me more opinions. Let’s make progress together.
You should add [] after the name in the FILE type of the input tag of the uploaded file HTML. The function is to create an array in the HTML to PHP. For example, the name is pictures, and the name of the multiple file reference is pictures[]. The example is as follows:

<code id="code0"><br><font face="仿宋_GB2312"><form action="upload.php" method="post" enctype="multipart/form-data"><br><p><br><input type="file" name="pictures[]" /><br /><br><input type="file" name="pictures[]" /><br /><br><input type="file" name="pictures[]" /><br /><br><input type="submit" value="上传" /><br></p><br></form> //手册中实例。</font>

< ;br />

//Examples in the manual. The method manual for using HTML files to create arrays explains this:

To make your

result be sent to the PHP script as an array, you need to set the or

The unit is named like this: <input name="MyArray[]" /><br /> <br /><br /><br /> You can group cells into different arrays by assigning them the same name: <br /> input name="MyArray[]" /><br>                                                          arrays, MyArray and MyOtherArray, and sent to the PHP script. <br><br><br> You can also assign a specified key name to the array: <br> ;<br>                <input name="AnotherArray[email]" /><br>                                                                                                                                                                                                    phone. <br><br> Note: Specifying array key names is optional in HTML. If you do not specify a key name, the array is filled in the order in which the cells appear in the form. The first example will contain the keys 0, 1, 2, 3. <br><br><br> After clicking to upload the above HTML, it will be read through the $_FILES super global variable. $_FILES will combine the file information passed up by the HTTP POST method into an array. The form of a file array is two-dimensional. The array form of more than two files is three-dimensional. <br><br><br> How to use $_FILES: <br>$_FILES['userfile']['name'] <br>The original name of the client machine file. <br>$_FILES['userfile']['type'] The MIME type of the file, if the browser provides this information. An example is "<br>image/gif<em>". However, this MIME type is not checked on the PHP side, so don't take it for granted. </em>$_FILES['userfile']['size'] The size of the uploaded file, in bytes. <br>$_FILES['userfile']['tmp_name'] The temporary file name stored on the server after the file is uploaded. <br>$_FILES['userfile']['error'] <br><br><br> The following is a file upload. After this file is uploaded, its information will be generated in the $_FILES array. Because it is a file, it is Two-dimensional, in order to facilitate everyone's understanding, we will use PRINT_R to output $_FILES to view its structure. <br><br>HTML file: <br> <h5></h5>
<code id="code1"><br><form action="upload.php" method="post" enctype="multipart/form-data"> <font face="仿宋_GB2312"><p><br><input type="file" name="pictures" /><br /><br><input type="submit" value="Upload" /><br></p><br>> >print_r($_FILES);</font>?></code><h5>Save it as UPLOAD.PHP, run the above HTML to select a file to upload, for example, the file name is Thumbs.db, in IE browser Click View, Source Code. The display is as follows: </h5>Array<code id="code2"><font face="仿宋_GB2312">          <br><?php<br />print_r($_FILES);<br />?></font></code>(<br> [pictures] =>                                                                                                                                                                                                 //Original file name<br>                                   Application/OCTET-Stream // File type <br> [tmp_name] = & gt; d: Easyphptmphp64.tmp // Temporary storage directory and file name <br> [error] = & gt; 0 // Error code 0 is successful upload <br> [size] => 23040 Based on this information, combined with the usage of $_FILES above, everyone should be able to understand it more deeply. <br><br><br>Let’s take a look at the multi-file upload. The three file names are FILE1.TXT, FILE2.TXT, FILE3.TXT, and then use PRINT_R output to view its structure: <br><br>HTML file Code: <br> <br><code id="code3"><br><font face="imitating Song_GB2312"><form action="upload.php" method="post" enctype="multipart/form -data"><br><p><br><input type="file" name="pictures[]" /><br /><br><input type="file" name="pictures[]" /><br /><h5><input type="file" name="pictures[]" /><br /></h5><input type ="submit" value="Upload" /><code id="code3"><br><font face="仿宋_GB2312"><form action="upload.php" method="post" enctype="multipart/form-data"><br><p><br><input type="file" name="pictures[]" /><br /><br><input type="file" name="pictures[]" /><br /><br><input type="file" name="pictures[]" /><br /><br><input type="submit" value="上传" /><br></p><br></form></font></code></p><h5></form></h5>
<code id="code4"><font face="仿宋_GB2312">          <br><?php<br />print_r($_FILES);<br />?></font></code>PHP receiving file code: <br> <br><code id=" code4"><font face="imitation Song_GB2312"> <br><?php<br />print_r($_FILES);<br />?><br><br>View source file: <br><br>Array<br>(<br> [pictures] => Array<br> [name] => Array<br> (<br> 0] => file1.txt<br>                                              1] => file2.txt<br>                                                                                                       (<br>                                                                                                                                          -stream<br>                                                                                        [tmp_name] => Array<br>(<br>                                                                                    [2] => D:EasyPHPtmpphp49.tmp<br>             )<br> [error] => Array<br>                                                                                                                 [2] => 0<br> )<br> [size ] => Array<br>                                                                                                                                                                                                                                                                  )<br> Assuming files named /file1.txt and /file2.txt are submitted, the value of $_FILES['pictures']['name'][0] will be file1.txt, and $_FILES[' The value of pictures']['name'][1] will be file2.txt. Similarly, $_FILES['file2.txt']['size'][0] will contain the size of the file file1.txt, and so on.	<br>
<br>
<br><br><br>http://www.bkjia.com/PHPjc/445075.html<br><br>www.bkjia.com<br><br>true<br><br>http: //www.bkjia.com/PHPjc/445075.html<br>TechArticle<p align="left"></p>
<div style="display:none;">Personal understanding summary of PHP multi-file upload. Multi-file upload is a basic application in PHP. Here I will share the relevant knowledge with you. Let me introduce it in detail. My level is limited, so please give me more opinions. Everyone...<span id="url" itemprop="url"></span><span id="indexUrl" itemprop="indexUrl"></span>
<span id="isOriginal" itemprop="isOriginal"></span>
</div></font></code></font></code></div><div class="nphpQianMsg"><div class="clear"></div></div><div class="nphpQianSheng"><span>Statement：</span><div>The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn</div></div></div><div class="nphpSytBox"><span>Previous article：<a class="dBlack" title="php web page ftp code 1_PHP tutorial" href="http://m.php.cn/faq/305472.html">php web page ftp code 1_PHP tutorial</a></span><span>Next article：<a class="dBlack" title="php web page ftp code 1_PHP tutorial" href="http://m.php.cn/faq/305474.html">php web page ftp code 1_PHP tutorial</a></span></div><div class="nphpSytBox2"><div class="nphpZbktTitle"><h2>Related articles</h2><em><a href="http://m.php.cn/article.html" class="bBlack"><i>See more</i><b></b></a></em><div class="clear"></div></div><ul class="nphpXgwzList"><li><b></b><a href="http://m.php.cn/faq/1.html" title="How to use cURL to implement Get and Post requests in PHP" class="aBlack">How to use cURL to implement Get and Post requests in PHP</a><div class="clear"></div></li><li><b></b><a href="http://m.php.cn/faq/1.html" title="How to use cURL to implement Get and Post requests in PHP" class="aBlack">How to use cURL to implement Get and Post requests in PHP</a><div class="clear"></div></li><li><b></b><a href="http://m.php.cn/faq/1.html" title="How to use cURL to implement Get and Post requests in PHP" class="aBlack">How to use cURL to implement Get and Post requests in PHP</a><div class="clear"></div></li><li><b></b><a href="http://m.php.cn/faq/1.html" title="How to use cURL to implement Get and Post requests in PHP" class="aBlack">How to use cURL to implement Get and Post requests in PHP</a><div class="clear"></div></li><li><b></b><a href="http://m.php.cn/faq/2.html" title="All expression symbols in regular expressions (summary)" class="aBlack">All expression symbols in regular expressions (summary)</a><div class="clear"></div></li></ul></div></div><div class="nphpFoot"><div class="nphpFootBg"><ul class="nphpFootMenu"><li><a href="http://m.php.cn/"><b class="icon1"></b><p>Home</p></a></li><li><a href="http://m.php.cn/course.html"><b class="icon2"></b><p>Course</p></a></li><li><a href="http://m.php.cn/wenda.html"><b class="icon4"></b><p>Q&A</p></a></li><li><a href="http://m.php.cn/login"><b class="icon5"></b><p>My</p></a></li><div class="clear"></div></ul></div></div><div class="nphpYouBox" style="display: none;"><div class="nphpYouBg"><div class="nphpYouTitle"><span onclick="$('.nphpYouBox').hide()"></span><a href="http://m.php.cn/"></a><div class="clear"></div></div><ul class="nphpYouList"><li><a href="http://m.php.cn/"><b class="icon1"></b><span>Home</span><div class="clear"></div></a></li><li><a href="http://m.php.cn/course.html"><b class="icon2"></b><span>Course</span><div class="clear"></div></a></li><li><a href="http://m.php.cn/article.html"><b class="icon3"></b><span>Article</span><div class="clear"></div></a></li><li><a href="http://m.php.cn/wenda.html"><b class="icon4"></b><span>Q&A</span><div class="clear"></div></a></li><li><a href="http://m.php.cn/dic.html"><b class="icon6"></b><span>Dictionary</span><div class="clear"></div></a></li><li><a href="http://m.php.cn/course/type/99.html"><b class="icon7"></b><span>Manual</span><div class="clear"></div></a></li><li><a href="http://m.php.cn/xiazai/"><b class="icon8"></b><span>Download</span><div class="clear"></div></a></li><li><a href="http://m.php.cn/faq/zt" title="Topic"><b class="icon12"></b><span>Topic</span><div class="clear"></div></a></li><div class="clear"></div></ul></div></div><div class="nphpDing" style="display: none;"><div class="nphpDinglogo"><a href="http://m.php.cn/"></a></div><div class="nphpNavIn1"><div class="swiper-container nphpNavSwiper1"><div class="swiper-wrapper"><div class="swiper-slide"><a href="http://m.php.cn/" >Home</a></div><div class="swiper-slide"><a href="http://m.php.cn/article.html" class="hover">Article</a></div><div class="swiper-slide"><a href="http://m.php.cn/wenda.html" >Q&A</a></div><div class="swiper-slide"><a href="http://m.php.cn/course.html" >Course</a></div><div class="swiper-slide"><a href="http://m.php.cn/faq/zt" >Topic</a></div><div class="swiper-slide"><a href="http://m.php.cn/xiazai"  >Download</a></div><div class="swiper-slide"><a href="http://m.php.cn/game" >Game</a></div><div class="swiper-slide"><a href="http://m.php.cn/dic.html" >Dictionary</a></div><div class="clear"></div></div></div><div class="langadivs"  ><a href="javascript:;" class="bg4 bglanguage"></a><div class="langadiv" ><a  onclick="javascript:setlang('zh-cn');" class="language course-right-orders chooselan "  href="javascript:;"><span>简体中文</span><span>（ZH-CN）</span></a><a  onclick="javascript:;" class="language course-right-orders chooselan chooselanguage"  href="javascript:;"><span>English</span><span>（EN）</span></a><a  onclick="javascript:setlang('zh-tw');" class="language course-right-orders chooselan "  href="javascript:;"><span>繁体中文</span><span>（ZH-TW）</span></a><a  onclick="javascript:setlang('ja');" class="language course-right-orders chooselan "  href="javascript:;"><span>日本語</span><span>（JA）</span></a><a  onclick="javascript:setlang('ko');" class="language course-right-orders chooselan "  href="javascript:;"><span>한국어</span><span>（KO）</span></a><a  onclick="javascript:setlang('ms');" class="language course-right-orders chooselan "  href="javascript:;"><span>Melayu</span><span>（MS）</span></a><a  onclick="javascript:setlang('fr');" class="language course-right-orders chooselan "  href="javascript:;"><span>Français</span><span>（FR）</span></a><a  onclick="javascript:setlang('de');" class="language course-right-orders chooselan "  href="javascript:;"><span>Deutsch</span><span>（DE）</span></a></div></div><script>            var swiper = new Swiper('.nphpNavSwiper1', {
                slidesPerView : 'auto',
                observer: true,//修改swiper自己或子元素时，自动初始化swiper
                observeParents: true,//修改swiper的父元素时，自动初始化swiper

});
        </script></div></div><script>isLogin = 0;</script><script type="text/javascript" src="/static/layui/layui.js"></script><script type="text/javascript" src="/static/js/global.js?4.9.47"></script></div><script src="https://vdse.bdstatic.com//search-video.v1.min.js"></script><link rel='stylesheet' id='_main-css' href='/static/css/viewer.min.css' type='text/css' media='all'/><script type='text/javascript' src='/static/js/viewer.min.js?1'></script><script type='text/javascript' src='/static/js/jquery-viewer.min.js'></script><script>jQuery.fn.wait = function (func, times, interval) {
    var _times = times || -1, //100次
    _interval = interval || 20, //20毫秒每次
    _self = this,
    _selector = this.selector, //选择器
    _iIntervalID; //定时器id
    if( this.length ){ //如果已经获取到了，就直接执行函数
        func && func.call(this);
    } else {
        _iIntervalID = setInterval(function() {
            if(!_times) { //是0就退出
                clearInterval(_iIntervalID);
            }
            _times <= 0 || _times--; //如果是正数就 --

_self = $(_selector); //再次选择
            if( _self.length ) { //判断是否取到
                func && func.call(_self);
                clearInterval(_iIntervalID);
            }
        }, _interval);
    }
    return this;
}
$("table.syntaxhighlighter").wait(function() {
    $('table.syntaxhighlighter').append("<p class='cnblogs_code_footer'><span class='cnblogs_code_footer_icon'></span></p>");
});
$(document).on("click", ".cnblogs_code_footer",function(){
      $(this).parents('table.syntaxhighlighter').css('display','inline-table');$(this).hide();
});
$('.nphpQianCont').viewer({navbar:true,title:false,toolbar:false,movable:false,viewed:function(){$('img').click(function(){$('.viewer-close').trigger('click');});}});
</script></body></html>