Five minutes to solve PHP file upload code demonstration

When learning PHP, you may encounter the problem of uploading files in PHP. Here we will introduce the detailed PHP file upload code to solve this problem. I will share it with you here. The syntax of PHP is very simple. It is its simplicity that makes it the number one programming language on the Internet.

You don’t need to have a lot of knowledge to get started. For example, if you learn C language, you must know how to define each variable, how to operate pointers, and memory. How to create and destroy etc. Another example: when you learn the Java language, you must have a foundation in object-oriented (OO), and you must know when encapsulation is needed, when inheritance is needed, and when polymorphism is needed. To do a project, why do you need to know SSH. Most users of PHP may not be so particular at all. Some people like process-oriented, so you should write code in a process-oriented way; some people like object-oriented, then you should write code in an object-oriented way. . Php originated from the Internet, and it is currently the first programming language of Web2.0 on the Internet. Meeting user needs always comes first, and maintainability can be placed second for now. We usually say that web applications will always be beta versions, and plans are far less likely to change quickly.

<ol class="dp-xml">
<li class="alt"><span><span><span class="tag"><strong><font color="#006699">></font></strong></span><span> </span></span><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></span></li>
<li class="alt">
<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="">
<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>gb2312</FONT></SPAN><SPAN>"</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>title</SPAN><SPAN class=tag>></span></font></strong><span>无标题文档</span><strong><font color="#006699"><span class="tag"><span class="tag-name">title</span><span class="tag">></span></span></font></strong><span> </span>
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<li class="">
<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="alt"><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><span class="tag"><strong><font color="#006699"><</FONT></STRONG></SPAN><SPAN class=attribute><FONT color=#ff0000>formenctype</FONT></SPAN><SPAN class=tag-name><STRONG><FONT color=#006699>formenctype</FONT></STRONG></SPAN><SPAN>="multipart/form-data"</SPAN><SPAN class=attribute-value><FONT color=#0000ff>action</FONT></SPAN><SPAN>="upload.php"</SPAN><SPAN class=attribute><FONT color=#ff0000>method</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>"post"</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>="hidden"</SPAN><SPAN class=attribute-value><FONT color=#0000ff>name</FONT></SPAN><SPAN>="max_file_size"</SPAN><SPAN class=attribute><FONT color=#ff0000>value</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>300000</FONT></SPAN><SPAN class=tag><STRONG><FONT color=#006699>></font></strong></span><span> </span>
</li>
<li class="alt">
<span></span><span class="tag"><strong><font color="#006699"><</FONT></STRONG></SPAN><SPAN class=attribute><FONT color=#ff0000>inputname</FONT></SPAN><SPAN class=tag-name><STRONG><FONT color=#006699>inputname</FONT></STRONG></SPAN><SPAN>="userfile"</SPAN><SPAN class=attribute-value><FONT color=#0000ff>type</FONT></SPAN><SPAN>="file"</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>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>"submit"</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">form</span><span class="tag">></span></span></font></strong><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><strong><font color="#006699"><span class="tag"><span class="tag-name">html</span><span class="tag">></span></span></font></strong><span> </span>
</li>
<li class=""><span> </span></li>
<li class="alt"><span>//upload.php  </span></li>
<li class="">
<span></span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">php</span></font></strong><span> </span>
</li>
<li class="alt">
<span>$</span><span class="attribute"><font color="#ff0000">uploaddir</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"c:\"</font></span><span>;  </span>
</li>
<li class="">
<span>$</span><span class="attribute"><font color="#ff0000">uploadfile</font></span><span>=$uploaddir.$_FILES['userfile']['name'];  </span>
</li>
<li class="alt">
<span>print"</span><strong><font color="#006699"><span class="tag"><</SPAN><SPAN class=tag-name>pre</SPAN><SPAN class=tag>></span></font></strong><span>";  </span>
</li>
<li class=""><span>if(move_uploaded_file($_FILES['userfile']['tmp_name'],$uploadfile))  </span></li>
<li class="alt"><span>{  </span></li>
<li class=""><span>print("上传成功!");  </span></li>
<li class="alt"><span>print_r($_FILES);  </span></li>
<li class=""><span>}  </span></li>
<li class="alt"><span>else  </span></li>
<li class=""><span>{  </span></li>
<li class="alt"><span>print("上传失败!");  </span></li>
<li class=""><span>print_r($_FILES);  </span></li>
<li class="alt"><span>}  </span></li>
<li class="">
<span>print"</span><strong><font color="#006699"><span class="tag"><span class="tag-name">pre</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> </span>
</li>
</ol>

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The above is the detailed PHP file upload code, I hope it will be helpful to everyone.

Five minutes to solve PHP file upload code demonstration_PHP tutorial