_wp_check_existing_file_names() WP 5.3.1
Helper function to check if a file name could match an existing image sub-size file name.
This is an internal function for using it by WP core itself. It's not recommended to use this function in your code.
No Hooks.
Return
true|false
. True if the tested file name could match an existing file, false otherwise.
Usage
_wp_check_existing_file_names( $filename, $files );
- $filename(string) (required)
- The file name to check.
- $files(array) (required)
- An array of existing files in the directory.
Changelog
Since 5.3.1 | Introduced. |
Code of _wp_check_existing_file_names() wp check existing file names WP 5.7.1
function _wp_check_existing_file_names( $filename, $files ) {
$fname = pathinfo( $filename, PATHINFO_FILENAME );
$ext = pathinfo( $filename, PATHINFO_EXTENSION );
// Edge case, file names like `.ext`.
if ( empty( $fname ) ) {
return false;
}
if ( $ext ) {
$ext = ".$ext";
}
$regex = '/^' . preg_quote( $fname ) . '-(?:\d+x\d+|scaled|rotated)' . preg_quote( $ext ) . '$/i';
foreach ( $files as $file ) {
if ( preg_match( $regex, $file ) ) {
return true;
}
}
return false;
}