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0419.php文件
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>图片上传</title>
</head>
<body>
<form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" method="POST" enctype="multipart/form-data">
<!-- 允许上传的文件大小 -->
<input type="hidden" name="MAX_FILE_SIZE" value="542400">
<fieldset>
<legend align="center">文件上传</legend>
<p><strong>选择文件：</strong><input type="file" name="upload" id="upload"></p>
</fieldset>
<p align="center"><button type="submit" name="submit">上传</button></p>
</form>
<script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
<script type="text/javascript">
$('#submit').click(function() {
$.ajax({
url: 'cheack.php',
type: 'POST',
})
return false;
})
</script>
</body>
</html>点击 "运行实例" 按钮查看在线实例
check.php
<?php
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
if (isset($_FILES['upload'])) {
$allow = ['image/jpg','image/jpeg','image/png'];
if (in_array($_FILES['upload']['type'], $allow)) {
if (move_uploaded_file($_FILES['upload']['tmp_name'], "upload/{$_FILES['upload']['name']}")){
echo "<script>alert('文件上传成功')</script>";
}
}else {
//提示格式不对
echo "<script>alert('仅允许上传jpg和png格式的图片')</script>";
}
}
//对上传错误进行处理
if ($_FILES['upload']['error'] > 0 ) {
echo '<p>错误原因是:<strong>';
switch ($_FILES['upload']['error']) {
case 1:
echo '文件超过了php.ini配置中设置的大小';
break;
case 2:
echo '文件超过了表单中常量设置的大小';
break;
case 3:
echo '仅有部分文件被上传';
break;
case 4:
echo '没有文件被上传';
break;
case 6:
echo '没有可用的临时文件夹';
break;
case 7:
echo '磁盘已满,写入失败';
break;
case 8:
echo '上传意外中止';
break;
default:
echo '系统未知错误';
break;
}
echo '</strong></p>';
//手动删除临时文件
if (file_exists($upFile['tmp_name']) && is_file($upFile['tmp_name'])){
unclick($upFile['tmp_name']);
}
}
}
?>点击 "运行实例" 按钮查看在线实例
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