@ 2015-12-13T22:03:41Z <?php
$arr = array(
'key' => 'foo',
'key2' => 'bar',
0 => 'num_foo',
1 => 'num_bar'
);
$new_array = array_filter ($arr, function($key) { return is_int($key); }, ARRAY_FILTER_USE_KEY);
var_dump($new_array);
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Output for 5.6.0 - 5.6.40 , 7.0.0 - 7.0.33 , 7.1.0 - 7.1.33 , 7.2.0 - 7.2.34 , 7.3.0 - 7.3.33 , 7.4.0 - 7.4.33 , 8.0.0 - 8.0.30 , 8.1.0 - 8.1.33 , 8.2.0 - 8.2.29 , 8.3.0 - 8.3.26 , 8.4.1 - 8.4.13 array(2) {
[0]=>
string(7) "num_foo"
[1]=>
string(7) "num_bar"
}
Output for 5.5.0 - 5.5.38 Notice: Use of undefined constant ARRAY_FILTER_USE_KEY - assumed 'ARRAY_FILTER_USE_KEY' in /in/qfar9 on line 10
Warning: array_filter() expects at most 2 parameters, 3 given in /in/qfar9 on line 10
NULL
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136.15 ms | 407 KiB | 5 Q