Automattic\WooCommerce\EmailEditor\Validator

Schema::validate_pattern │ protected │ WC 1.0

Validates the regular expression pattern.

Method of the class: Schema{}

No Hooks.

Returns

null. Nothing (null).

Usage

// protected - for code of main (parent) or child class
$result = $this->validate_pattern( $pattern ): void;

$pattern(string) (required)

Regular expression pattern.

Schema::validate_pattern() Schema::validate pattern code ^{WC 10.4.3}

protected function validate_pattern( string $pattern ): void {
	$escaped = str_replace( '#', '\\#', $pattern );
	$regex   = "#$escaped#u";
	if ( @preg_match( $regex, '' ) === false ) { // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
		throw new \Exception( \esc_html( "Invalid regular expression '$regex'" ) );
	}
}