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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 |
---|---|
4113 | require_once ABSPATH . WPINC . '/class-avif-info.php'; |
4114 | /** |
4115 | * Filters the list of image editing library classes. |
4116 | * |
4117 | * @since 3.5.0 |
4118 | * |
4119 | * @param string[] $image_editors Array of available image editor class names. Defaults are |
4120 | * 'WP_Image_Editor_Imagick', 'WP_Image_Editor_GD'. |
4121 | */ |
4122 | $implementations = apply_filters( 'wp_image_editors', array( 'WP_Image_Editor_Imagick', 'WP_Image_Editor_GD' ) ); |
4123 | $supports_input = false; |
4124 |
|
4125 | foreach ( $implementations as $implementation ) { |
4126 | if ( ! call_user_func( array( $implementation, 'test' ), $args ) ) { |
4127 | continue; |
4128 | } |
4129 |
|
4130 | // Implementation should support the passed mime type. |
4131 | if ( isset( $args['mime_type'] ) && |