Online PHP editor | refs for YpOtW

<?php //Source: https://bugs.php.net/bug.php?id=63893 $text = str_repeat( 'm', 2000 ); $long_from_a = str_repeat( 'a', 1 ); $long_from_x = str_repeat( 'x', 1500 ); $replacements = array( $long_from_a => 'b', $long_from_x => 'y' ); $start = microtime( true ); $result_1 = strtr( $text, $replacements ); echo "strtr: " . number_format( microtime( true ) - $start, 4 ) . "\n"; $start = microtime( true ); $result_2 = str_replace( array_keys( $replacements ), array_values( $replacements ), $text ); echo "str_replace: " . number_format( microtime( true ) - $start, 4 ) . "\n"; echo $result_1 === $result_2 ? "results match!\n": "no match!\n";