动态网站开发中，常用的PHP上传文件的代码实例。
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<html>
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<head>
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<meta http-equiv=”Content-Type” content=”text/html; charset=gb2312″>
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<title>设计家园(www.dwww.cn)文件上传实例</title>
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</head>
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<body>
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<form enctype=”multipart/form-data” action=upfile.php method=post>
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<input type=”hidden” name=”MAX_FILE_SIZE” value=”2000000″>
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<input type=file name=upfile size=20>
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<input type=submit value=’上传文件’>
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</form>
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</body>
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</html>
<?
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function getname(exname){
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dir = “../uploadfile/”;
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i=1;
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if(!is_dir(dir)){
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mkdir(dir,0777);
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}
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while(true){
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if(!is_file(dir.i.”.”.exname)){
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name=i.”.”.exname;
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break;
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}
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i++;
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}
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return dir.name;
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}
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exname=strtolower(substr(_FILES[’upfile’][’name’],(strrpos(_FILES[’upfile’][’name’],’.’)+1)));
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uploadfile = getname(exname);
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if (move_uploaded_file(_FILES[’upfile’][’tmp_name’], uploadfile)) {
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echo “<h2><font color=#ff0000>文件上传成功！</font></h2><br><br>”;
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}else {
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echo “<h2><font color=#ff0000>文件上传失败！</font></h2><br><br>”;
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}
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echo “下面是文件上传的一些信息：
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<br><br>原文件名：”._FILES[’upfile’][’name’] .
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“<br><br>类型：” ._FILES[’upfile’][’type’] .
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“<br><br>临时文件名：”._FILES[’upfile’][’tmp_name’].
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“<br><br>文件大小：”._FILES[’upfile’][’size’] .
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“<br><br>错误代码：”._FILES[’upfile’][’error’];
?>