1--TEST-- 2Test strtr() function : usage variations - string containing escape sequences for 'str' argument 3--FILE-- 4<?php 5/* Testing strtr() function by passing the 6 * string containing various escape sequences for 'str' argument and 7 * corresponding translation pair of chars for 'from', 'to' & 'replace_pairs' arguments 8*/ 9 10echo "*** Testing strtr() : string containing escape sequences for 'str' arg ***\n"; 11/* definitions of required input variables */ 12$count = 1; 13 14$heredoc_str = <<<EOD 15\tes\t\\stt\r 16\\test\\\strtr 17\ntest\r\nstrtr 18\$variable 19\"quotes 20EOD; 21 22//array of string inputs for $str 23$str_arr = array( 24 //double quoted strings 25 "\tes\t\\stt\r", 26 "\\test\\\strtr", 27 "\ntest\r\nstrtr", 28 "\$variable", 29 "\"quotes", 30 31 //single quoted strings 32 '\tes\t\\stt\r', 33 '\\test\\\strtr', 34 '\ntest\r\nstrtr', 35 '\$variable', 36 '\"quotes', 37 38 //heredoc string 39 $heredoc_str 40); 41 42$from = "\n\r\t\\"; 43$to = "TEST"; 44$replace_pairs = array("\n" => "t", "\r\n" => "T", "\n\r\t\\" => "TEST"); 45 46/* loop through to test strtr() with each element of $str_arr */ 47for($index = 0; $index < count($str_arr); $index++) { 48 echo "-- Iteration $count --\n"; 49 50 $str = $str_arr[$index]; //getting the array element in 'str' variable 51 52 //strtr() call in three args syntax form 53 var_dump( strtr($str, $from, $to) ); 54 55 //strtr() call in two args syntax form 56 var_dump( strtr($str, $replace_pairs) ); 57 58 $count++; 59} 60echo "*** Done ***"; 61?> 62--EXPECT-- 63*** Testing strtr() : string containing escape sequences for 'str' arg *** 64-- Iteration 1 -- 65string(9) "SesSTsttE" 66string(9) " es \stt 66" 67-- Iteration 2 -- 68string(12) "TtestTTstrtr" 69string(12) "\test\\strtr" 70-- Iteration 3 -- 71string(12) "TtestETstrtr" 72string(11) "ttestTstrtr" 73-- Iteration 4 -- 74string(9) "$variable" 75string(9) "$variable" 76-- Iteration 5 -- 77string(7) ""quotes" 78string(7) ""quotes" 79-- Iteration 6 -- 80string(12) "TtesTtTsttTr" 81string(12) "\tes\t\stt\r" 82-- Iteration 7 -- 83string(12) "TtestTTstrtr" 84string(12) "\test\\strtr" 85-- Iteration 8 -- 86string(15) "TntestTrTnstrtr" 87string(15) "\ntest\r\nstrtr" 88-- Iteration 9 -- 89string(10) "T$variable" 90string(10) "\$variable" 91-- Iteration 10 -- 92string(8) "T"quotes" 93string(8) "\"quotes" 94-- Iteration 11 -- 95string(54) "SesSTsttETTtestTTstrtrTTtestETstrtrT$variableTT"quotes" 96string(52) " es \sttT\test\\strtrtttestTstrtrt$variablet\"quotes" 97*** Done *** 98