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73 lines
1.5 KiB
PHP
73 lines
1.5 KiB
PHP
--TEST--
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Test array_filter() function : usage variations - built-in functions as 'callback' argument
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--FILE--
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<?php
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/* Prototype : array array_filter(array $input [, callback $callback])
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* Description: Filters elements from the array via the callback.
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* Source code: ext/standard/array.c
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*/
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/*
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* Passing built-in functions and different language constructs as 'callback' argument
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*/
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echo "*** Testing array_filter() : usage variations - built-in functions as 'callback' argument ***\n";
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$input = array(0, 1, -1, 10, 100, 1000, 'Hello', null);
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// using built-in function 'is_int' as 'callback'
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var_dump( array_filter($input, 'is_int') );
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// using built-in function 'chr' as 'callback'
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var_dump( array_filter($input, 'chr') );
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// using language construct 'echo' as 'callback'
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var_dump( array_filter($input, 'echo') );
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// using language construct 'exit' as 'callback'
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var_dump( array_filter($input, 'exit') );
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echo "Done"
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?>
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--EXPECTF--
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*** Testing array_filter() : usage variations - built-in functions as 'callback' argument ***
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array(6) {
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[0]=>
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int(0)
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[1]=>
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int(1)
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[2]=>
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int(-1)
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[3]=>
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int(10)
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[4]=>
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int(100)
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[5]=>
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int(1000)
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}
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array(8) {
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[0]=>
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int(0)
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[1]=>
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int(1)
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[2]=>
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int(-1)
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[3]=>
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int(10)
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[4]=>
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int(100)
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[5]=>
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int(1000)
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[6]=>
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string(5) "Hello"
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[7]=>
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NULL
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}
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Warning: array_filter() expects parameter 2 to be valid callback, string given in %s on line %d
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NULL
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Warning: array_filter() expects parameter 2 to be valid callback, string given in %s on line %d
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NULL
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Done
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