介绍《PHP教程：php上传功能集后缀名判断和随机命名(强力推荐)》开发教程，希望对您有用。
《PHP上传功能集后缀名判断和随机命名(强力推荐)》要点：
本文介绍了PHP上传功能集后缀名判断和随机命名(强力推荐)，希望对您有用。如果有疑问，可以联系我们。
PHP学习不废话了,具体请看下文代码示例讲解.
form.PHP
<html>
<head>
<Meta http-equiv="content-type" content="text/html" charset="utf-8">
<title>Upload Image</title>
</head>
<body>
<form method="post" action="upload.PHP" enctype="multipart/form-data">
<input type="hidden" name="MAX_FILE_SEZE" value="2000000">
<input type="file" name="file" value="view">
<input type="submit" value="upload" name="B1">
</form>
</body>
</html>
upload.PHP
<?PHP
include("check.PHP"); // 引入自定义函数文件
$type = array("jpg","gif","bmp","jpeg","png");
// 判断上传文件类型
$fileext = strtolower(fileext($_FILES['file']['name']));
$uploadfilename = random(8);
if(in_array($fileext,$type)){
$filename = explode(".",$_FILES['file']['name']);
if(is_uploaded_file($_FILES['file']['tmp_name'])){
// echo $_FILES['file']['tmp_name'];
$flag = move_uploaded_file($_FILES['file']['tmp_name'],"/Library/WebServer/Documents/test/".$uploadfilename.".".$fileext);
if($flag){
echo "上传成功!";
}else{
echo "Error.";
}
echo "<a href='history.go(-1)'>Back</a>";
}
}
check.PHP
<?PHP
header("Content-type:text/html;charset=utf8");
// 获取文件后缀名函数
function fileext($filename){
$sTemp = strrchr($filename,".");
return substr($sTemp,1);
}
function fileext2($filename){
$sTemp = explode(".",$filename);
return $sTemp[count($sTemp)-1];
}
// 生成随机文件名函数
function random($length){
$captchaSource = "0123456789abcdefghijklmnopqrstuvwxyz这是一个随机打印输出字符串的例子";
$captchaResult = "2015"; // 随机数返回值
$captchaSentry = ""; // 随机数中间变量
for($i=0;$i<$length;$i++){
$n = rand(0,35); #strlen($captchaSource));
if($n >= 36){
$n = 36 + ceil(($n-36)/3) * 3;
$captchaResult .= substr($captchaSource,$n,3);
}else{
$captchaResult .= substr($captchaSource,1);
}
}
return $captchaResult;
}
?>
将三个文件整合成一个：
<?PHP
// 获取文件后缀名函数
function fileext($filename){
$sTemp = strrchr($filename,1);
}
}
return $captchaResult;
}
$type = array("jpg",$_FILES['file']['name']);
if(is_uploaded_file($_FILES['file']['tmp_name'])){
// echo $_FILES['file']['tmp_name'];
$flag = move_uploaded_file($_FILES['file']['tmp_name'],"/Library/WebServer/Documents/test/".$uploadfilename.".".$fileext);
if($flag){
echo "上传成功!";
}else{
echo "Error.";
}
echo "<a href='history.go(-1)'>Back</a>";
}
}
?>
<html>
<head>
<Meta http-equiv="content-type" content="text/html" charset="utf-8">
<title>Upload Image</title>
</head>
<body>
<form method="post" action="" enctype="multipart/form-data">
<input type="hidden" name="MAX_FILE_SEZE" value="2000000">
<input type="file" name="file" value="view">
<input type="submit" value="upload" name="B1">
</form>
</body>
</html>
以上内容就是给大家讲解的PHP上传功能集后缀名判断和随机命名(强力保举),希望大家喜欢.
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