CODEWITHSUNDEEP
php
Nahid Suhail
Nahid Suhail

Reputation: 185

imagecreatetruecolor php uses up too much memory

I have a php code which gets its value through an ajax call.These values are provided by the crop module that user uses in order to crop the image.

<?php

ini_set('Memory_limit', -1);

$imgUrl = $_POST['imgUrl'];
// original sizes
$imgInitW = $_POST['imgInitW'];
$imgInitH = $_POST['imgInitH'];
// resized sizes

$imgW = $_POST['imgW'];
$imgH = $_POST['imgH'];
// offsets
$imgY1 = $_POST['imgY1'];
$imgX1 = $_POST['imgX1'];
// crop box
$cropW = $_POST['cropW'];
$cropH = $_POST['cropH'];
// rotation angle
$angle = $_POST['rotation'];

$jpeg_quality = 100;
$uniquename=uniqid().time();
$output_filename = "croppedimages/".$uniquename;
// uncomment line below to save the cropped image in the same location as the original image.
//$output_filename = dirname($imgUrl). "/croppedImg_".rand();

$what = getimagesize($imgUrl);

switch(strtolower($what['mime']))
{
    case 'image/png':
        $img_r = imagecreatefrompng($imgUrl);
        $source_image = imagecreatefrompng($imgUrl);
        $type = '.png';
        break;
    case 'image/jpeg':
        $img_r = imagecreatefromjpeg($imgUrl);
        $source_image = imagecreatefromjpeg($imgUrl);
        error_log("jpg");
        $type = '.jpeg';
        break;
    case 'image/gif':
        $img_r = imagecreatefromgif($imgUrl);
        $source_image = imagecreatefromgif($imgUrl);
        $type = '.gif';
        break;
    default: die('image type not supported');
}


//Check write Access to Directory

if(!is_writable(dirname($output_filename))){
    $response = Array(
        "status" => 'error',
        "message" => 'Can`t write cropped File'
    );  
}else{

    // resize the original image to size of editor
    $resizedImage = imagecreatetruecolor($imgW, $imgH);
    imagecopyresampled($resizedImage, $source_image, 0, 0, 0, 0, $imgW, $imgH, $imgInitW, $imgInitH);
    // rotate the rezized image
    $rotated_image = imagerotate($resizedImage, -$angle, 0);
    // find new width & height of rotated image
    $rotated_width = imagesx($rotated_image);
    $rotated_height = imagesy($rotated_image);
    // diff between rotated & original sizes
    $dx = $rotated_width - $imgW;
    $dy = $rotated_height - $imgH;
    // crop rotated image to fit into original rezized rectangle
    $cropped_rotated_image = imagecreatetruecolor($imgW, $imgH);
    imagecolortransparent($cropped_rotated_image, imagecolorallocate($cropped_rotated_image, 0, 0, 0));
    imagecopyresampled($cropped_rotated_image, $rotated_image, 0, 0, $dx / 2, $dy / 2, $imgW, $imgH, $imgW, $imgH);
    // crop image into selected area
    $final_image = imagecreatetruecolor($cropW, $cropH);
    imagecolortransparent($final_image, imagecolorallocate($final_image, 0, 0, 0));
    imagecopyresampled($final_image, $cropped_rotated_image, 0, 0, $imgX1, $imgY1, $cropW, $cropH, $cropW, $cropH);
    // finally output png image
    //imagepng($final_image, $output_filename.$type, $png_quality);
    imagejpeg($final_image, $output_filename.$type, $jpeg_quality);
    $response = Array(
        "status" => 'success',
        "url" => $output_filename.$type,
    );

}
print json_encode($response);

Here cropW and cropH are the values of the cropped image.however this works fine for low resolution images but when an image of high resolution is used console shows an error on imagecreatetruecolor function.

Fatal Error: Allowed Memory Size of 134217728 Bytes Exhausted

Now even when i set the memory usage by ini_set('Memory_limit', -1); it still shows me this error.What could be the reason and what would be the solution?

Note: I know setting ini_set('Memory_limit', -1); is a bad idea.

Upvotes: 1

Views: 856

Answers (1)

Death-is-the-real-truth
Death-is-the-real-truth

Reputation: 72269

If you check your php.ini file you will get it's memory_limit not Memory_limit.

See here:- http://prntscr.com/agxrtt

So change ini_set('Memory_limit','-1') to ini_set('memory_limit',256) or ini_set('memory_limit','-1')

Upvotes: 1

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