WP_CLI

Inflector::tableize() │ public static │ WP-CLI 1.0

Converts a word into the format for a Doctrine table name. Converts 'ModelName' to 'model_name'.

Method of the class: Inflector{}

No Hooks.

Return

String. The tableized word.

Usage

$result = Inflector::tableize( $word );
$word(string) (required)
The word to tableize.

Inflector::tableize() code WP-CLI 2.8.0-alpha

wp-cli/php/WP_CLI/Inflector.php 
public static function tableize( $word ) {
	return strtolower( preg_replace( '~(?<=\\w)([A-Z])~', '_$1', $word ) );
}