Image resize PHP

Question

Im trying to create a simple image resize feature, can you tell me where i'm going wrong:

//resize image 
  $imageSrc = imagecreatefromjpeg('http://www.katsmurals.com/cms/'.$target_path);
  $width = imagesx($imageSrc);
  $height = imagesy($imageSrc);
  echo $width;
  echo $height;
   //new dimensions
   $i = $width;
   $j = $height;
   while($i > 700){
    $i = $i / 1.5;
    $j = $j / 1.5;
   }

  $image_p = imagecreatetruecolor($i, $j);
  $image = imagecreatefromjpeg('http://www.katsmurals.com/cms/'.$target_path);
  imagecopyresampled($image_p, $image, 0, 0, 0, 0, $i, $j, $width, $height);
  $newImage = $target_path.'_scaled.jpg';
  imagejpeg($image_p, $newImage, 80);

$target_path is the newly uploaded image, i want to resize it if the width is over 700.

Once this is done, a DB is updated with the information, at the moment the image is being uploaded fine, but the size seems to be exactly the same, so the resizing code isn't working?

Possible duplicate of [resize image in PHP](http://stackoverflow.com/questions/14649645/resize-image-in-php) — Kevin Brown-Silva, Jan 01 '17 at 17:50

score 1 · Answer 1 · answered Oct 02 '12 at 11:16

A very helpful and amazing code:

   <?php
    class SimpleImage {

   var $image;
   var $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;
   }      

}
?>

Link: http://www.white-hat-web-design.co.uk/articles/php-image-resizing.php i found it very helpful.hope good for you. Happy coding!!

score 0 · Accepted Answer · answered Jul 18 '10 at 11:31

0

http://php.net/manual/en/function.imagecopyresampled.php

First argument of imagecopyresampled is resource (image), not string containing file name.

answered Jul 18 '10 at 11:31

el.pescado - нет войне

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I have changed the code, still nothing, can you see where im going wrong? – user195257 Jul 18 '10 at 11:48
1

@user please do some debugging. What are `width` and `height` values? What kind of image are you resizing? What format? – Pekka Jul 18 '10 at 11:51
.jpg file, when echo'ing out width and height these are the results: width:1235 height:1551 the while loop is successfully running to give new values, creating the new resized image is the problem. – user195257 Jul 18 '10 at 11:55
I managed to get it woking, i have posted the code up for ayone who may need it in the future – user195257 Jul 18 '10 at 12:36

Image resize PHP

2 Answers2