Paste_Image.png
<?php
//getimagesize($filename):得到指定图片的信息，
//如果是图片返回数组 如果不是图片返回FALSE
$filename = 'uploads/yun.jpeg';
var_dump(getimagesize($filename));
/*
* array
0 => int 224
1 => int 224
2 => int 2
3 => string 'width="224" height="224"' (length=24)
'bits' => int 8
'channels' => int 3
'mime' => string 'image/jpeg' (length=10)
*/
?>
<html>
<head><title></title></head>
<body>
<form action="doAction.php" method="post" enctype="multipart/form-data">
请选择您要上传的文件：
<input type="file" name="myFile">
<input type="submit" value="上传文件">
</form>
</body>
</html>
doAction.php
<?php
$fileInfo = $_FILES['myFile'];
$maxSize = 2097152;//2M 允许的最大值
$allowExt = array('jpeg', 'jpg', 'png', 'gif', 'wbmp');
$flag = true;//检测是否为真实的图片类型
//1.判断错误号
if ($fileInfo['error'] == 0) {
//判断上传文件的大小
if ($fileInfo['size'] > $maxSize) {
exit("上传文件过大");
}
//$ext=strtolower(end(explode('.',$fileInfo['name'])))
$ext = pathinfo($fileInfo['name'], PATHINFO_EXTENSION);
if (!in_array($ext, $allowExt)) {
exit("非法文件类型");
}
//判断是否是通过HTTP POST文件上传上来的
if (!is_uploaded_file($fileInfo['tmp_name'])) {
exit('文件不是通过HTTP POST 方式上传来的');
}
//检测是否为真实的图片类型
if ($flag) {
if (!getimagesize($fileInfo['tmp_name'])) {
exit('不是真正的图片类型');
}
}
$path = 'uploads';
if (!file_exists($path)) {
mkdir($path, 0777, true);
chmod($path, 0777);
}
//确保文件名唯一，防止重名产生覆盖
$uniName = md5(uniqid(microtime(true), true)) . '.' . $ext;
$destination = $path . '/' . $uniName;//uploads/e8b67f2be200f625ef111b4f3352903b.jpeg
if (@move_uploaded_file($fileInfo['tmp_name'], $destination)) {
echo "文件上传成功";
} else {
echo "文件上传失败";
}
} else {
switch ($fileInfo['error']) {
case 1:
echo "上传文件超过了PHP配置文件中upload_max_file";
break;
case 2:
echo "超过了表单MAX_FILE_SIZE";
break;
case 3:
echo "文件部分被上传";
break;
case 4:
echo "没有选择上传文件";
break;
case 6:
echo "没有找到临时目录";
break;
case 7:
case 8:
echo "系统错误";
break;
}
}
?>
Paste_Image.png
Paste_Image.png
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