acf/upload_prefilter/key=(key) │ filter-hook │ ACF 1.0

Usage

add_filter( 'acf/upload_prefilter/key=(key)', 'wp_kama_acf_upload_prefilter_key_filter', 10, 3 );

/**
 * Function for `acf/upload_prefilter/key=(key)` filter-hook.
 * 
 * @param  $errors 
 * @param  $file   
 * @param  $field  
 *
 * @return 
 */
function wp_kama_acf_upload_prefilter_key_filter( $errors, $file, $field ){
	// filter...
	return $errors;
}

$errors

-

$file

-

$field

-

Where the hook is called

$errors = apply_filters( "acf/upload_prefilter/key={$field['key']}", $errors, $file, $field );

Where the hook is used in Advanced Custom Fields PRO