Fatal error: Allowed memory size
I am getting a fatal error from my image resize script that takes jpegs and resizes them and then saves. The image I am uploading are not over the max upload limit (not ever close) and based on the error I am not close to the limit.
Am I missing something about how the memory is used and why it would fail randomly but work on images that are larger?
Fatal error: Allowed memory size of 52428800 bytes exhausted (tried to allocate 15756 bytes) in /home/content/t/w/e/myserver/html/test/includes/resize_class.php on line 34
I have a php.ini file in the same directory
memory_limit = 50M
post_max_size = 100M
file_uploads = On
upload_max_filesize = 192M
LINE 34: $this->image = imagecreatefromjpeg($filename);
resize_calss.php: Also to note. The user is uploading up to 3 iamges at a time and I am looping through and using this class to resize and save the thumbs on my server
/*
* File: SimpleImage.php
* Author: Simon Jarvis
* Copyright: 2006 Simon Jarvis
* Date: 08/11/06
* Link: http://www.white-hat-web-design.co.uk/articles/php-image-resizing.php
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details:
* http://www.gnu.org/licenses/gpl.html
*
*/
class SimpleImage {
var $image;
var $开发者_运维百科image_type;
function load($filename) {
$image_info = getimagesize($filename);
$this->image_type = $image_info[2];
if( $this->image_type == IMAGETYPE_JPEG ) {
$this->image = imagecreatefromjpeg($filename);
} elseif( $this->image_type == IMAGETYPE_GIF ) {
$this->image = imagecreatefromgif($filename);
} elseif( $this->image_type == IMAGETYPE_PNG ) {
$this->image = imagecreatefrompng($filename);
}
}
function save($filename, $image_type=IMAGETYPE_JPEG, $compression=75, $permissions=null) {
if( $image_type == IMAGETYPE_JPEG ) {
imagejpeg($this->image,$filename,$compression);
} elseif( $image_type == IMAGETYPE_GIF ) {
imagegif($this->image,$filename);
} elseif( $image_type == IMAGETYPE_PNG ) {
imagepng($this->image,$filename);
}
if( $permissions != null) {
chmod($filename,$permissions);
}
}
function output($image_type=IMAGETYPE_JPEG) {
if( $image_type == IMAGETYPE_JPEG ) {
imagejpeg($this->image);
} elseif( $image_type == IMAGETYPE_GIF ) {
imagegif($this->image);
} elseif( $image_type == IMAGETYPE_PNG ) {
imagepng($this->image);
}
}
function getWidth() {
return imagesx($this->image);
}
function getHeight() {
return imagesy($this->image);
}
function resizeToHeight($height) {
$ratio = $height / $this->getHeight();
$width = $this->getWidth() * $ratio;
$this->resize($width,$height);
}
function resizeToWidth($width) {
$ratio = $width / $this->getWidth();
$height = $this->getheight() * $ratio;
$this->resize($width,$height);
}
function scale($scale) {
$width = $this->getWidth() * $scale/100;
$height = $this->getheight() * $scale/100;
$this->resize($width,$height);
}
function resize($width,$height) {
$new_image = imagecreatetruecolor($width, $height);
imagecopyresampled($new_image, $this->image, 0, 0, 0, 0, $width, $height, $this->getWidth(), $this->getHeight());
$this->image = $new_image;
}
}
?>
Something I've done in my image manipulation class that this one does not do is destroy the original image after creating a new one (such as in the resize()
method).
Try changing the resize()
method to this
function resize($width,$height) {
$new_image = imagecreatetruecolor($width, $height);
imagecopyresampled($new_image, $this->image, 0, 0, 0, 0, $width, $height, $this->getWidth(), $this->getHeight());
imagedestroy($this->_image);
$this->image = $new_image;
}
I'd also add something similar in the load()
method
function load($filename) {
if (is_resource($this->image)) {
imagedestroy($this->image);
}
// and the rest
}
image re-size will used lots memory,
you can consider to use ini_set
to boost the memory limit
specifically at the method (doing resize) in resize_class.php
related questions
- Efficient JPEG Image Resizing in PHP
- reasonable PHP memory_limit for image resize
- an enthusiasm guy who create a memory calculator for this
Your script seems to have exceeded the memory limit
. (52,428,800 bytes = 50MB)
post_max_size shall be graeter than or equal to upload_max_filesize in php.ini
post_max_size = 200M
upload_max_filesize = 192M
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