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137 lines
2.9 KiB
PHP
137 lines
2.9 KiB
PHP
--TEST--
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Test mb_substr() function : usage variations - pass different integers to $start arg
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--SKIPIF--
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<?php
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extension_loaded('mbstring') or die('skip');
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function_exists('mb_substr') or die("skip mb_substr() is not available in this build");
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?>
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--FILE--
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<?php
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/* Prototype : string mb_substr(string $str, int $start [, int $length [, string $encoding]])
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* Description: Returns part of a string
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* Source code: ext/mbstring/mbstring.c
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*/
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/*
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* Test how mb_substr() behaves when passed a range of integers as $start argument
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*/
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echo "*** Testing mb_substr() : usage variations ***\n";
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mb_internal_encoding('UTF-8');
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$string_ascii = b'+Is an English string'; //21 chars
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$string_mb = base64_decode('5pel5pys6Kqe44OG44Kt44K544OI44Gn44GZ44CCMDEyMzTvvJXvvJbvvJfvvJjvvJnjgII='); //21 chars
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/*
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* Loop through integers as multiples of ten for $offset argument
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* 60 is larger than *BYTE* count for $string_mb
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*/
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for ($i = -60; $i <= 60; $i += 10) {
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if (@$a || @$b) {
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$a = null;
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$b = null;
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}
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echo "\n**-- Offset is: $i --**\n";
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echo "-- ASCII String --\n";
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$a = mb_substr($string_ascii, $i, 4);
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if ($a !== false) {
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var_dump(bin2hex($a));
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}
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else {
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var_dump($a);
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}
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echo "--Multibyte String --\n";
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$b = mb_substr($string_mb, $i, 4, 'UTF-8');
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if (strlen($a) == mb_strlen($b, 'UTF-8')) { // should return same length
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var_dump(bin2hex($b));
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} else {
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echo "Difference in length of ASCII string and multibyte string\n";
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}
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}
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echo "Done";
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?>
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--EXPECT--
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*** Testing mb_substr() : usage variations ***
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**-- Offset is: -60 --**
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-- ASCII String --
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string(8) "2b497320"
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--Multibyte String --
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string(24) "e697a5e69cace8aa9ee38386"
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**-- Offset is: -50 --**
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-- ASCII String --
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string(8) "2b497320"
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--Multibyte String --
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string(24) "e697a5e69cace8aa9ee38386"
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**-- Offset is: -40 --**
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-- ASCII String --
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string(8) "2b497320"
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--Multibyte String --
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string(24) "e697a5e69cace8aa9ee38386"
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**-- Offset is: -30 --**
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-- ASCII String --
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string(8) "2b497320"
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--Multibyte String --
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string(24) "e697a5e69cace8aa9ee38386"
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**-- Offset is: -20 --**
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-- ASCII String --
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string(8) "49732061"
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--Multibyte String --
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string(24) "e69cace8aa9ee38386e382ad"
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**-- Offset is: -10 --**
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-- ASCII String --
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string(8) "69736820"
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--Multibyte String --
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string(8) "31323334"
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**-- Offset is: 0 --**
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-- ASCII String --
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string(8) "2b497320"
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--Multibyte String --
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string(24) "e697a5e69cace8aa9ee38386"
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**-- Offset is: 10 --**
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-- ASCII String --
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string(8) "6c697368"
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--Multibyte String --
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string(8) "30313233"
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**-- Offset is: 20 --**
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-- ASCII String --
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string(2) "67"
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--Multibyte String --
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string(6) "e38082"
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**-- Offset is: 30 --**
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-- ASCII String --
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string(0) ""
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--Multibyte String --
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string(0) ""
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**-- Offset is: 40 --**
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-- ASCII String --
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string(0) ""
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--Multibyte String --
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string(0) ""
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**-- Offset is: 50 --**
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-- ASCII String --
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string(0) ""
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--Multibyte String --
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string(0) ""
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**-- Offset is: 60 --**
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-- ASCII String --
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string(0) ""
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--Multibyte String --
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string(0) ""
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Done
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