1--TEST-- 2strlen() function 3--INI-- 4precision = 12 5--FILE-- 6<?php 7/* returns the length of a given string */ 8 9echo "#### Basic operations and variations ####\n"; 10$strings = array( "Hello, World", 11 'Hello, World', 12 '!!Hello, World', 13 "??Hello, World", 14 "$@#%^&*!~,.:;?", 15 "123", 16 123, 17 "-1.2345", 18 -1.2344, 19 NULL, 20 "", 21 " ", 22 "\0", 23 "\x000", // len = 2 24 "\xABC", // len = 2 25 "\0000", // len = 2 26 "0", 27 0, 28 "\t", // len = 1 29 '\t', // len = 2 30 TRUE, 31 FALSE, 32 "Hello, World\0", 33 "Hello\0World", 34 'Hello, World\0', 35 "Hello, World\n", 36 "Hello, World\r", 37 "Hello, World\t", 38 "Hello, World\\", 39 " ", 40 chr(128).chr(234).chr(65).chr(255).chr(256), 41 42 "abcdefghijklmnopqrstuvwxyz0123456789~!@#$%^&*()_+=|?><-;:$ 43 []{}{{{}}}[[[[]][]]]***&&&^^%$###@@!!@#$%&^&**/////|\\\\\\ 44 abcdefghijklmnopqrstuvwxyz0123456789~!@#$%^&*()_+=|?><-;:$ 45 []{}{{{}}}[[[[]][]]]***&&&^^%$###@@!!@#$%&^&**/////|\\\\\\ 46 abcdefghijklmnopqrstuvwxyz0123456789~!@#$%^&*()_+=|?><-;:$ 47 []{}{{{}}}[[[[]][]]]***&&&^^%$###@@!!@#$%&^&**/////|\\\\\\ 48 abcdefghijklmnopqrstuvwxyz0123456789" 49 ); 50 51/* loop through to find the length of each string */ 52for($i=0; $i<count($strings); $i++) { 53 echo "String length of '$strings[$i]' is => "; 54 var_dump( strlen($strings[$i]) ); 55} 56 57 58 59echo "\n#### Testing miscellaneous inputs ####\n"; 60 61echo "--- Testing objects ---\n"; 62/* we get "Recoverable fatal error: saying Object of class could not be converted 63 to string" by default when an object is passed instead of string: 64The error can be avoided by choosing the __toString magix method as follows: */ 65 66class StringCapable { 67 function __toString() { 68 return "Hello, world"; 69 } 70} 71$obj_string = new StringCapable; 72 73var_dump(strlen("$obj_string")); 74 75 76echo "\n--- Testing arrays ---\n"; 77$str_arr = array("hello", "?world", "!$%**()%**[][[[&@#~!", array()); 78var_dump(strlen("$str_arr[1]")); 79var_dump(strlen("$str_arr[2]")); 80 81 82echo "\n--- Testing a longer and heredoc string ---\n"; 83$string = <<<EOD 84abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz0123456789 85abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz0123456789 86abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz0123456789 87abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz0123456789 88abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz0123456789 89abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz0123456789 90abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz0123456789 91@#$%^&**&^%$#@!~:())))((((&&&**%$###@@@!!!~~~~@###$%^&* 92abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz0123456789 93EOD; 94var_dump(strlen($string)); 95 96echo "\n--- Testing a heredoc null string ---\n"; 97$str = <<<EOD 98EOD; 99var_dump(strlen($str)); 100 101 102echo "\n--- Testing simple and complex syntax strings ---\n"; 103$str = 'world'; 104 105/* Simple syntax */ 106var_dump(strlen("$str")); 107var_dump(strlen("$str'S")); 108var_dump(strlen("$strS")); 109 110/* String with curly braces, complex syntax */ 111var_dump(strlen("${str}S")); 112var_dump(strlen("{$str}S")); 113 114echo "\n--- strlen for long float values ---\n"; 115/* Here two different outputs, which depends on the rounding value 116 before converting to string. Here Precision = 12 */ 117var_dump(strlen(10.55555555555555555555555555)); // len = 13 118var_dump(strlen(10.55555555595555555555555555)); // len = 12 119 120echo "\n--- Nested strlen() ---\n"; 121var_dump(strlen(strlen("Hello"))); // len=1 122 123echo "Done\n"; 124?> 125--EXPECTF-- 126#### Basic operations and variations #### 127String length of 'Hello, World' is => int(12) 128String length of 'Hello, World' is => int(12) 129String length of '!!Hello, World' is => int(14) 130String length of '??Hello, World' is => int(14) 131String length of '$@#%^&*!~,.:;?' is => int(14) 132String length of '123' is => int(3) 133String length of '123' is => int(3) 134String length of '-1.2345' is => int(7) 135String length of '-1.2344' is => int(7) 136String length of '' is => int(0) 137String length of '' is => int(0) 138String length of ' ' is => int(1) 139String length of '�' is => int(1) 140String length of '�0' is => int(2) 141String length of '�C' is => int(2) 142String length of '�0' is => int(2) 143String length of '0' is => int(1) 144String length of '0' is => int(1) 145String length of ' ' is => int(1) 146String length of '\t' is => int(2) 147String length of '1' is => int(1) 148String length of '' is => int(0) 149String length of 'Hello, World�' is => int(13) 150String length of 'Hello�World' is => int(11) 151String length of 'Hello, World\0' is => int(14) 152String length of 'Hello, World 153' is => int(13) 154String length of 'Hello, World 154' is => int(13) 155String length of 'Hello, World ' is => int(13) 156String length of 'Hello, World\' is => int(13) 157String length of ' ' is => int(14) 158String length of '��A��' is => int(5) 159String length of 'abcdefghijklmnopqrstuvwxyz0123456789~!@#$%^&*()_+=|?><-;:$ 160 []{}{{{}}}[[[[]][]]]***&&&^^%$###@@!!@#$%&^&**/////|\\\ 161 abcdefghijklmnopqrstuvwxyz0123456789~!@#$%^&*()_+=|?><-;:$ 162 []{}{{{}}}[[[[]][]]]***&&&^^%$###@@!!@#$%&^&**/////|\\\ 163 abcdefghijklmnopqrstuvwxyz0123456789~!@#$%^&*()_+=|?><-;:$ 164 []{}{{{}}}[[[[]][]]]***&&&^^%$###@@!!@#$%&^&**/////|\\\ 165 abcdefghijklmnopqrstuvwxyz0123456789' is => int(495) 166 167#### Testing miscellaneous inputs #### 168--- Testing objects --- 169int(12) 170 171--- Testing arrays --- 172int(6) 173int(20) 174 175--- Testing a longer and heredoc string --- 176int(639) 177 178--- Testing a heredoc null string --- 179int(0) 180 181--- Testing simple and complex syntax strings --- 182int(5) 183int(7) 184 185Warning: Undefined variable $strS in %s on line %d 186int(0) 187int(6) 188int(6) 189 190--- strlen for long float values --- 191int(13) 192int(12) 193 194--- Nested strlen() --- 195int(1) 196Done 197
