我希望用户将他们的图像上传到页面,然后压缩&裁剪它们。下面给出的是php代码为图像压缩,它压缩jpeg并下载压缩版本。这工作正常3mb(4567 * 2755),但不是上面的文件。Php图像压缩和裁剪不适用于3mb以上jpeg
编辑:
出现在服务器错误日志中的信息是
[04君2015年8点10分07秒欧洲/巴黎] PHP的警告:POST的Content-Length的4213306个字节超过3145728个字节在未知线极限0
请帮助:-(
<?php
$name = '';
$type = '';
$size = '';
$error = '';
function compress_image($source_url, $destination_url, $quality)
{
$info = getimagesize($source_url);
if ($info['mime'] == 'image/jpeg')
$image = imagecreatefromjpeg($source_url);
elseif ($info['mime'] == 'image/gif')
$image = imagecreatefromgif($source_url);
elseif ($info['mime'] == 'image/png')
$image = imagecreatefrompng($source_url);
imagejpeg($image, $destination_url, $quality);
return $destination_url;
}
if ($_POST)
{
if ($_FILES["file"]["error"] > 0)
{ $error = $_FILES["file"]["error"];
}
else if (($_FILES["file"]["type"] == "image/gif") || ($_FILES["file"]["type"] == "image/jpeg") || ($_FILES["file"]["type"] == "image/png") || ($_FILES["file"]["type"] == "image/pjpeg"))
{ $url = 'destinationx.jpg';
$filename = compress_image($_FILES["file"]["tmp_name"], $url, 40);
$buffer = file_get_contents($url); /* Force download dialog... */
header("Content-Type: application/force-download");
header("Content-Type: application/octet-stream");
header("Content-Type: application/download"); /* Don't allow caching... */ header("Cache-Control: must-revalidate, post-check=0, pre-check=0"); /* Set data type, size and filename */
header("Content-Type: application/octet-stream");
header("Content-Transfer-Encoding: binary");
header("Content-Length: " . strlen($buffer));
header("Content-Disposition: attachment; filename=$url"); /* Send our file... */
echo $buffer; }
else { $error = "Uploaded image should be jpg or gif or png"; } } ?>
<html>
<head>
<title>Php code compress the image</title>
</head>
<body>
<div class="message">
<?php if($_POST){ if ($error) { ?>
<label class="error"><?php echo $error; ?></label>
<?php } } ?>
</div>
<fieldset class="well"> <legend>Upload Image:</legend>
<form action="" name="myform" id="myform" method="post" enctype="multipart/form-data">
<ul>
<li>
<label>Upload:</label>
<input type="file" name="file" id="file"/>
</li>
<li>
<input type="submit" name="submit" id="submit" class="submit btn-success"/>
</li>
</ul>
</form>
</fieldset>
</body>
</html>
服务器错误日志里有什么? –
没有服务器错误日志,服务器上传照片并不会返回任何内容 –
将会有服务器错误日志。这是你的服务器上的文件。它的位置各不相同,所以我不知道你的位置。找到它。它会告诉你出了什么问题。 –