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76 lines
2.3 KiB
PHP
76 lines
2.3 KiB
PHP
--TEST--
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Test array_rand() function : usage variation - invalid values for 'req_num' parameter
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--FILE--
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<?php
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/* Prototype : mixed array_rand(array $input [, int $num_req])
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* Description: Return key/keys for random entry/entries in the array
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* Source code: ext/standard/array.c
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*/
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/*
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* Test behaviour of array_rand() function when associative array and
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* various invalid values are passed to the 'input' and 'req_num'
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* parameters respectively
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*/
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echo "*** Testing array_rand() : with invalid values for 'req_num' ***\n";
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// initialise associative arrays
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$input = array(
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1 => 'one', 2.2 => 'float key', 0.9 => 'decimal key',
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2e2 => 'exp key1', 2000e-3 => 'negative exp key',
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0xabc => 2748, 0x12f => '303', 0xff => "255",
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0123 => 83, 0129 => 10, 010 => "8"
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);
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// Testing array_rand() function with various invalid 'req_num' values
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// with valid num_req values
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echo"\n-- With default num_req value --\n";
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var_dump( array_rand($input) ); // with default $num_req value
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echo"\n-- With num_req = 1 --\n";
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var_dump( array_rand($input, 1) ); // with valid $num_req value
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// with invalid num_req value
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echo"\n-- With num_req = 0 --\n";
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var_dump( array_rand($input, 0) ); // with $num_req=0
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echo"\n-- With num_req = -1 --\n";
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var_dump( array_rand($input, -1) ); // with $num_req=-1
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echo"\n-- With num_req = -2 --\n";
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var_dump( array_rand($input, -2) ); // with $num_req=-2
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echo"\n-- With num_req more than number of members in 'input' array --\n";
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var_dump( array_rand($input, 13) ); // with $num_req=13
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echo "Done";
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?>
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--EXPECTF--
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*** Testing array_rand() : with invalid values for 'req_num' ***
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-- With default num_req value --
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int(%d)
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-- With num_req = 1 --
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int(%d)
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-- With num_req = 0 --
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Warning: array_rand(): Second argument has to be between 1 and the number of elements in the array in %s on line %d
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NULL
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-- With num_req = -1 --
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Warning: array_rand(): Second argument has to be between 1 and the number of elements in the array in %s on line %d
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NULL
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-- With num_req = -2 --
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Warning: array_rand(): Second argument has to be between 1 and the number of elements in the array in %s on line %d
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NULL
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-- With num_req more than number of members in 'input' array --
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Warning: array_rand(): Second argument has to be between 1 and the number of elements in the array in %s on line %d
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NULL
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Done
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