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110 lines
1.8 KiB
PHP
110 lines
1.8 KiB
PHP
--TEST--
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Test array_filter() function : usage variations - 'input' argument with different false entries
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--FILE--
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<?php
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/* Prototype : array array_filter(array $input [, callback $callback])
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* Description: Filters elements from the array via the callback.
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* Source code: ext/standard/array.c
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*/
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/*
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* With default callback function argument, array_filter() removes elements which are interpreted as false
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* Here Testing all the false array element possibilities
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*/
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// callback function always_true
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function always_true($input)
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{
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return true;
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}
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// callback function always_false
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function always_false($input)
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{
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return false;
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}
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echo "*** Testing array_filter() : usage variations - different false elements in 'input' ***\n";
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// unset variable
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$unset_var = 10;
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unset($unset_var);
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// empty heredoc string
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$empty_heredoc =<<<EOT
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EOT;
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// input array with different false elements
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$input = array(
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false,
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False,
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'',
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"",
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0,
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0.0,
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null,
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NULL,
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"0",
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'0',
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array(),
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!1,
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1==2,
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$empty_heredoc,
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@$unset_var,
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@$undefined_var,
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);
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// With default callback function
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var_dump( array_filter($input) );
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// With callback function which returns always true
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var_dump( array_filter($input, 'always_true') );
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// With callback function which returns always false
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var_dump( array_filter($input, 'always_false') );
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echo "Done"
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?>
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--EXPECTF--
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*** Testing array_filter() : usage variations - different false elements in 'input' ***
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array(0) {
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}
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array(16) {
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[0]=>
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bool(false)
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[1]=>
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bool(false)
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[2]=>
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string(0) ""
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[3]=>
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string(0) ""
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[4]=>
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int(0)
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[5]=>
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float(0)
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[6]=>
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NULL
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[7]=>
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NULL
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[8]=>
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string(1) "0"
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[9]=>
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string(1) "0"
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[10]=>
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array(0) {
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}
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[11]=>
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bool(false)
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[12]=>
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bool(false)
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[13]=>
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string(0) ""
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[14]=>
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NULL
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[15]=>
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NULL
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}
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array(0) {
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}
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Done
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