我有一个名为test.php的文件。在这个文件中，我写了下面的代码来上传图片（.PNG和.JPG）。我还添加了一些代码来在上传之前预览图片......似乎没有什么问题，但是当我按下提交按钮时，没有任何反应......为什么？我的问题在哪里？
更新：我进行了更改，现在收到此警告：警告：为 foreach（） 提供的参数无效...
测试.php：
<script type="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.min.js"></script>
<body>
<?php
if ( isset( $_POST[ 'submit' ] ) ) {
define ("UPLOAD_DIR" , "uploaded/pic/");
foreach ($_FILES["images"]["error"] as $key => $error) {
if ($error == UPLOAD_ERR_OK) {
$name = $_FILES["images"]["name"][$key];
$info = getimagesize($_FILES["images"]["tmp_name"][$key]);
$image_type = $info[2];
$type = $_FILES['images']['type'][$key];
// if the image is .JPG or .PNG
if ( ($image_type == 3) || ($image_type == 2) ){
// ensure a safe filename
$name = preg_replace("/[^A-Z0-9._-]/i", "_", $name);
// don't overwrite an existing file
$i = 0;
$parts = pathinfo($name);
while (file_exists(UPLOAD_DIR . $name)) {
$i++;
$name = $parts["filename"] . "-" . $i . "." . $parts["extension"];
}
// preserve file from temporary directory
$success = move_uploaded_file($_FILES["images"]["tmp_name"][$key], UPLOAD_DIR . $name);
if (!$success) {
echo "<p>Unable to save file.</p>";
exit;
}
// set proper permissions on the new file
chmod(UPLOAD_DIR . $name, 0644);
echo "<h2>Successfully Uploaded Images</h2>";
}
else{
echo "<h2>format not supported... </h2>";
}
}
}
}
?>
<div id="upload_form">
<form id="frm1" name="frm1" method="post" action="test.php" enctype="multipart/form-data">
<p>
<label for="images">insert your image</label>
<input type="file" name="images" id="images" tabindex="80"/>
</p>
<img id="pic" name="pic" src="#" />
<button type="submit" id="submit" name="submit">Upload Files!</button>
</form>
<script type="text/javascript" language="javascript">
// Preview the picture before Uploading on the server!
function readURL(input) {
if (input.files && input.files[0]) {
var reader = new FileReader();
reader.onload = function (e) {
$('#pic').attr('src', e.target.result);
}
reader.readAsDataURL(input.files[0]);
}
}
$("#images").change(function(){
readURL(this);
});
</script>
</div>
您需要使用 [] 将name="images作为数组
喜欢这个：
<input type="file" name="images[]" id="images" tabindex="80"/>