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65 lines
1.4 KiB
PHP
65 lines
1.4 KiB
PHP
--TEST--
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Test array_walk() function : usage variations - 'input' argument containing reference variables
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--FILE--
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<?php
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/* Prototype : bool array_walk(array $input, string $funcname [, mixed $userdata])
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* Description: Apply a user function to every member of an array
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* Source code: ext/standard/array.c
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*/
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/*
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* Testing array_walk() with an array having reference variables
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*/
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echo "*** Testing array_walk() : array with references ***\n";
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$value1 = 10;
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$value2 = -20;
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$value3 = &$value1;
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$value4 = 50;
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// 'input' array containing references to above variables
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$input = array(&$value1, &$value2, -35, &$value3, 0, &$value4);
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// callback function
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/* Prototype : callback(int $value, mixed $key)
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* Parameters : $value - values in given input array
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* $key - keys in given input array
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* Description : function checks for the value whether positive or negative and displays according to that
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*/
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function callback($value, $key)
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{
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// dump the arguments to check that they are passed
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// with proper type
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var_dump($key); // key
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var_dump($value); // value
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echo "\n"; // new line to separate the output between each element
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}
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var_dump( array_walk($input, "callback"));
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echo "Done"
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?>
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--EXPECTF--
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*** Testing array_walk() : array with references ***
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int(0)
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int(10)
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int(1)
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int(-20)
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int(2)
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int(-35)
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int(3)
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int(10)
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int(4)
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int(0)
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int(5)
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int(50)
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bool(true)
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Done
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