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56 lines
1.6 KiB
PHP
56 lines
1.6 KiB
PHP
--TEST--
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Test usort() function : error conditions - Pass unknown 'cmp_function'
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--FILE--
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<?php
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/* Prototype : bool usort(array $array_arg, string $cmp_function)
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* Description: Sort an array by values using a user-defined comparison function
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* Source code: ext/standard/array.c
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*/
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/*
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* Pass an unknown comparison function to usort() to test behaviour.
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* Pass incorrect number of arguments and an unknown function to test which error
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* is generated.
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*/
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echo "*** Testing usort() : error conditions ***\n";
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function cmp($value1, $value2)
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{
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if($value1 == $value2) {
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return 0;
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}
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else if($value1 > $value2) {
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return 1;
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}
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else {
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return -1;
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}
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}
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// Initialize 'array_arg'
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$array_arg = array(0 => 1, 1 => 10, 2 => 'string', 3 => 3, 4 => 2, 5 => 100, 6 => 25);
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$extra_arg = 10;
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// With non existent comparison function
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echo "\n-- Testing usort() function with non-existent compare function --\n";
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var_dump( usort($array_arg, 'non_existent') );
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// With non existent comparison function and extra arguemnt
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echo "\n-- Testing usort() function with non-existent compare function and extra argument --\n";
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var_dump( usort($array_arg, 'non_existent', $extra_arg) );
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?>
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===DONE===
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--EXPECTF--
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*** Testing usort() : error conditions ***
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-- Testing usort() function with non-existent compare function --
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Warning: usort() expects parameter 2 to be a valid callback, function 'non_existent' not found or invalid function name in %s on line %d
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NULL
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-- Testing usort() function with non-existent compare function and extra argument --
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Warning: usort() expects exactly 2 parameters, 3 given in %s on line %d
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NULL
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===DONE===
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