Created
January 26, 2014 06:11
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<?php | |
/** | |
* wdw_crop_img (http://webdeveloperswall.com/wordpress/crop-image-script) | |
* crops the image to given width and height | |
* Parameters :- | |
* $image_url : string : absolute url to the image | |
* $width: int : desired width after cropping | |
* $height : desired height after cropping | |
* $upload_directory : name of the target directory (directoty inside wp-content>uploads folder) | |
* Returns :- an array containing errors/success messages, new(cropped) file path and cropped file url | |
returned array example: | |
$msg['message'] will be either 'success' or 'error' | |
$msg['path'] will be either blank (error) or something like c:\\path\to\wordpress\wp-content\uploads\myuploads\cropped_image.jpg | |
$msg['url'] will be either blank (error) or something like http://yourdomain.com/wp-content/uploads/myuploads/cropped_image.jpg | |
*/ | |
function wdw_crop_img($image_url, $i_width, $i_height, $upload_directory){ | |
$msg = array( | |
'message' => '', | |
'path' => '', | |
'url' =>'' | |
); | |
$upl_dir = wp_upload_dir(); | |
//an array : $upload_directory[basedir] => C:\path\to\wordpress\wp-content\uploads | |
$upload_folder = $upl_dir['basedir']."/" . $upload_directory; | |
$upload_url = $upl_dir['baseurl']."/" . $upload_directory; | |
$new_name = "img_" .uniqid(). uniqid() . ".jpg"; | |
$filename = $upload_folder . "/" . $new_name; | |
$fileurl = $upload_url . "/" . $new_name; | |
$image = imagecreatefromstring(file_get_contents($image_url)); | |
$thumb_width = $i_width; | |
$thumb_height = $i_height; | |
$width = imagesx($image); | |
$height = imagesy($image); | |
$original_aspect = $width / $height; | |
$thumb_aspect = $thumb_width / $thumb_height; | |
if ( $original_aspect >= $thumb_aspect ) | |
{ | |
// If image is wider than thumbnail (in aspect ratio sense) | |
$new_height = $thumb_height; | |
$new_width = $width / ($height / $thumb_height); | |
} | |
else | |
{ | |
// If the thumbnail is wider than the image | |
$new_width = $thumb_width; | |
$new_height = $height / ($width / $thumb_width); | |
} | |
$thumb = imagecreatetruecolor( $thumb_width, $thumb_height ); | |
try { | |
// Resize and crop | |
imagecopyresampled($thumb, | |
$image, | |
0 - ($new_width - $thumb_width) / 2, // Center the image horizontally | |
0 - ($new_height - $thumb_height) / 2, // Center the image vertically | |
0, 0, | |
$new_width, $new_height, | |
$width, $height); | |
imagejpeg($thumb, $filename, 80); | |
$msg['message'] = 'success'; | |
$msg['url'] = $fileurl; | |
$msg['path'] = $filename; | |
} | |
catch(Exception $e){ | |
$msg['message'] = 'error'; | |
} | |
return $msg; | |
} | |
?> |
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