Online PHP editor | refs for kWFH4

<?php function assertFalse( $expected, $message ) { if ( false !== $value ) { echo $message; return false; } else { return true; } } function assertTrue( $expected, $message ) { if ( true !== $value ) { echo $message; return false; } else { return true; } } $streamable = 0; $streamableS = '0'; var_dump( (bool) $streamable ); var_dump( (bool) $streamableS ); $camel = '@attr'; var_dump( strtolower( preg_replace( '#([a-zA-Z])(?=[A-Z])#', '$1_', trim( preg_replace('/[^A-Za-z0-9_-]+/', '_', $camel ), '_' ) ) ) );