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strncasecmp_variation6.phpt
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Tue Feb 21 23:48:04 2012 UTC (12 years, 6 months ago) by
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php
--TEST--
Test strncasecmp() function : usage variations - binary safe - all ASCII chars
--FILE--
<?php
/* Prototype : int strncasecmp ( string $str1, string $str2, int $len );
* Description: Binary safe case-insensitive string comparison of the first n characters
* Source code: Zend/zend_builtin_functions.c
*/
/* Test strncasecmp() function with binary values passed to 'str1' & 'str2' */
echo "*** Test strncasecmp() function: with binary inputs ***\n";
/* A binary function should work with all 256 characters that a character(8-bit) can take */
echo "\n-- Checking with all 256 characters given, in binary format --\n";
/* loop through to get all 256 character's equivelent binary value, and check working of strncasecmp() */
$count = 1;
for($ASCII = 0; $ASCII <= 255; $ASCII++) {
$str1 = decbin($ASCII); //ASCII value in binary form
$str2 = decbin( ord( chr($ASCII) ) ); //Getting equivelent ASCII value for the character in binary form
echo "-- Iteration $count --\n";
var_dump( strncasecmp($str1, $str2, 8) ); //comparing all the 8-bits; expected: int(0)
var_dump( strncasecmp($str1, $str2, 4) ); //comparing only 4-bits; expected: int(0)
$count++;
}
echo "\n-- Checking with out of character's range, given in binary format --\n";
$str1 = decbin(256);
$str2 = decbin( ord( chr(256) ));
var_dump( strncasecmp($str1, $str2, 8) ); //comparing all the 8-bits; expected: int(1)
echo "\n*** Done ***\n";
?>
--EXPECTF--
*** Test strncasecmp() function: with binary inputs ***
-- Checking with all 256 characters given, in binary format --
-- Iteration 1 --
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-- Checking with out of character's range, given in binary format --
int(1)
*** Done ***
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