Helper function to test if each of an array of file names could conflict with existing files.

Parameters

$filenamesstring[]required

Array of file names to check.

$dirstringrequired

The directory containing the files.

$filesarrayrequired

An array of existing files in the directory. May be empty.

Return

Source

function _wp_check_alternate_file_names( $filenames, $dir, $files ) {
	foreach ( $filenames as $filename ) {
		if ( file_exists( $dir . $filename ) ) {
			return true;
		}

		if ( ! empty( $files ) && _wp_check_existing_file_names( $filename, $files ) ) {
			return true;
		}
	}

	return false;
}

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