WP hooks navigation: Home/browse • Actions index • Filters index
To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
3222 | $file = get_attached_file( $file ); |
3223 |
|
3224 | if ( ! is_file( $file ) ) |
3225 | return sprintf(__('File “%s” doesn’t exist?'), $file); |
3226 |
|
3227 | if ( ! function_exists('imagecreatefromstring') ) |
3228 | return __('The GD image library is not installed.'); |
3229 |
|
3230 | // Set artificially high because GD uses uncompressed images in memory |
3231 | @ini_set( 'memory_limit', apply_filters( 'image_memory_limit', WP_MAX_MEMORY_LIMIT ) ); |
3232 | $image = imagecreatefromstring( file_get_contents( $file ) ); |
3233 |
|
3234 | if ( !is_resource( $image ) ) |
3235 | return sprintf(__('File “%s” is not an image.'), $file); |
3236 |
|
3237 | return $image; |
3238 | } |
3239 |
|
3240 | /** |