文件上传与检测
实例
<?php
//检测请求类型是否POST,如果不是应该提示用户类型不对
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/{$_FILES['upload']['name']}")){
echo "<script>alert('文件上传成功')</script>";
}
}else {
echo "<script>alert('仅允许上传jpg和png格式的图片')</script>";
}
}
if ($_FILES['upload']['error'] > 0 ) {
echo '<p>错误原因是:<strong>';
switch ($_FILES['upload']['error']) {
case 1:
echo '文件超过了php.ini配置中设置的大小';
break;
case 2:
echo '文件超过了表单中常量设置的大小';
break;
}
echo '</strong></p>';
if (file_exists($_FILES['upload']['tmp_name']) && is_file($_FILES['upload']['tmp_name'])) {
unlink($_FILES['upload']['tmp_name']);
}
}
} else {
echo '1';
}
?>运行实例 »
目录遍历
实例
$dir = opendir('../0827') or die('打开失败'); //打开目录
while (false != ($file = readdir($dir))) {//读取目录
if ($file != "." && $file != "..") {
print $file."<br>";
}
}
closedir($dir);//关闭目录运行实例 »
个人总结：
文件的上传与检测有点复杂。一边看一边抄，看来还是要多加练习啊
