我试图编写一个上传脚本，但我没有错误报告错误，只是一个空白屏幕，我检查了脚本，并且无法发现任何语法错误，据我所知 - 我知道哪个部分是导致错误但不确定原因？
这是第一个块，因为如果我删除它，表单会显示：
<?php # uploading files woooo
// CHECK IF THE FORM HAS BEEN SUBMITTED:
if (isset($_SERVER['REQUEST_METHOD'] == 'POST') {
// CHECK FOR AND UPLOADED FILE:
if (isset($_FILES['upload'])) {
// VALIDATE THE TYPE. SHOULD BE JPEG OR PNG.
$allowed = array ('image/pjpeg', 'image/jpeg', 'image/JPG', 'image/X_PNG', 'image/PNG', 'image/x-png');
if (in_array($_FILES['upload']['type'], $allowed)) {
// MOVE THE FILES OVER
if (move_uploaded_file($_FILES['upload']['tmp_name'], "../uploads/{$_FILES['upload']['name']}")){
echo '<p><em>the file has been uploaded</em></p>';
} // END OF MOVE.... IF.
} else { // INAVALID TYPE.
echo '<p class="error">Please upload a JPEG or PN image.</p>';
}
}
}
脚本继续似乎没问题......
// CHECK FOR AN ERROR:
if ($_FILES['upload']['error'] > 0) {
echo '<p class="error">the file could not be uploaded because <strong>';
// PRINT A MESSAGE BASED UPON THE ERROR
switch ($_FILES['upload']['error']) {
case 1:
print 'The file exceeds the upload_max filesize setting in php.ini';
break;
case 2:
print 'The file exceeds the MAX_FILE_SIZE setting in the html form';
break;
case 3:
print 'The file was only partially uploaded';
break;
case 4:
print 'No file was uploaded';
break;
case 6:
print 'No temp folder was available.';
break;
case 7:
print 'Unable to write to the disk.';
break;
case 8:
print 'File upload stopped.';
break;
default:
print 'A system error occured';
break;
} // END OF SWITCH
print '</strong></p>';
} // ENF OF ERROR IF
// DELETE THE FILE IF STILL EXISTS
if (file_exists ($_FILES['upload']['tmp_name']) && is_file($_FILES['upload']['tmp_name'])) {
unlink ($_FILES['upload']['tmp_name']);
} // ENF OF SUBMITTED FORM
?>
<form enctype="multipart/form-data" method="post" action="info.php">
<input type="hidden" name="MAX_FILE_SIZE" value="524288">
<fieldset>
<legend>Select a JPEG or PNG image of 512kb or smaller to be uploaded</legend>
<p><b><input type="file" name="upload"></p>
</fieldset>
<div align="center"><input type="submit" name="submit" value="submit" /></div>
</form>