--TEST-- Test strtr() function : error conditions --FILE-- <?php /* Prototype : string strtr(string str, string from[, string to]) * Description: Translates characters in str using given translation tables * Source code: ext/standard/string.c */ echo "*** Testing strtr() : error conditions ***\n"; $str = "string"; $from = "string"; $to = "STRING"; $extra_arg = "extra_argument"; echo "\n-- Testing strtr() function with Zero arguments --"; var_dump( strtr() ); echo "\n-- Testing strtr() function with less than expected no. of arguments --"; var_dump( strtr($str) ); echo "\n-- Testing strtr() function with more than expected no. of arguments --"; var_dump( strtr($str, $from, $to, $extra_arg) ); echo "Done"; ?> --EXPECTF-- *** Testing strtr() : error conditions *** -- Testing strtr() function with Zero arguments -- Warning: Wrong parameter count for strtr() in %s on line %d NULL -- Testing strtr() function with less than expected no. of arguments -- Warning: Wrong parameter count for strtr() in %s on line %d NULL -- Testing strtr() function with more than expected no. of arguments -- Warning: Wrong parameter count for strtr() in %s on line %d NULL Done