Wordpress image cropping and deletion of the original image

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Wordpress image cropping and deletion of the original image

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#1 by (1 votes)
#2 by (1 votes)

3

After the upload of an image in wordpress I would like to make a check if the registered image is larger than the declared size limit, if it is larger I want to delete the original image in upload folder and keep only images trimmed with thumbnails .

I'm using this function in functions.php

add_filter( 'wp_generate_attachment_metadata', 'delete_fullsize_image' );
function delete_fullsize_image( $metadata )
{
    $upload_dir = wp_upload_dir();
    $full_image_path = trailingslashit( $upload_dir['basedir'] ) . $metadata['file'];
    $deleted = unlink( $full_image_path );

    return $metadata;
}

Example:

I have specified that the maximum size of the images will be 300x300, when sending a 350x350 image it will crop the image to the size of 300x300 and delete the original image of 350x350.

How can this be done?

upload imagem wordpress resize

asked by anonymous 15.10.2015 / 14:17

2 answers

1

PHP has a method called getimagesize() which, as the name says, returns the image size. For example

$filepath = 'https://upload.wikimedia.org/wikipedia/en/c/c2/Peter_Griffin.png';

$size = getimagesize($filepath);

var_dump($size);

returns

array(6) { [0]=> int(247) [1]=> int(359) [2]=> int(3) [3]=> string(24) "width="247" height="359"" ["bits"]=> int(8) ["mime"]=> string(9) "image/png" }

The first two positions of this array represent, respectively, the length and height of your image. With this, just make a comparison before deleting the image. Your code stays

add_filter( 'wp_generate_attachment_metadata', 'delete_fullsize_image' );
function delete_fullsize_image( $metadata ){
    $upload_dir = wp_upload_dir();
    $full_image_path = trailingslashit( $upload_dir['basedir'] ) . $metadata['file'];
    $size = getimagesize($full_image_path);

    if(($full_image_path[0] < 300) and ($full_image_path[1] < 300)){
        $deleted = unlink( $full_image_path );
    }

    return $metadata;
}

15.10.2015 / 15:13

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score 1 · Accepted Answer

Apply to functions.php

add_filter( 'wp_generate_attachment_metadata', 'delete_fullsize_image' );
function delete_fullsize_image( $metadata )
{
    $upload_dir = wp_upload_dir();
    $full_image_path = trailingslashit( $upload_dir['basedir'] ) . $metadata['file'];
    if($metadata['width'] >= '300'){
     $deleted = unlink( $full_image_path );
    }    
    return $metadata;
}

With this function you can reach the width of the image before upload . In this case the limit value is 300.