1--TEST-- 2Test trim() function 3--FILE-- 4<?php 5/* trim with unset/null/boolean variable - returns an empty string */ 6echo "\n"; 7$null_var = ""; 8var_dump( trim($null_var) ); 9$null_var = 0; 10var_dump( trim($null_var) ); 11$bool_val = true; 12var_dump( trim($null_var) ); 13 14/* second argument charlist as empty - does not trim any white spaces */ 15var_dump( trim("\ttesting trim", "") ); 16var_dump( trim("\ttesting trim ", true) ); 17 18/* Use of class and objects */ 19echo "\n*** Testing with OBJECTS ***\n"; 20class string1 21{ 22 public function __toString() { 23 return "Object"; 24 } 25} 26$obj = new string1; 27var_dump( trim($obj, "Ot") ); 28 29/* String with embedded NULL */ 30echo "\n*** Testing with String with embedded NULL ***\n"; 31var_dump( trim("\x0n1234\x0005678\x0000efgh\xijkl\x0n1", "\x0n1") ); 32 33/* heredoc string */ 34$str = <<<EOD 35us 36ing heredoc string 37EOD; 38 39echo "\n*** Testing with heredoc string ***\n"; 40var_dump( trim($str, "us\ning") ); 41 42echo "\nDone"; 43?> 44--EXPECTF-- 45string(0) "" 46string(1) "0" 47string(1) "0" 48string(13) " testing trim" 49string(15) " testing trim " 50 51*** Testing with OBJECTS *** 52string(4) "bjec" 53 54*** Testing with String with embedded NULL *** 55string(22) "234%005678%000efgh\xijkl" 56 57*** Testing with heredoc string *** 58string(12) " heredoc str" 59 60Done 61
