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<?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);
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 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0
array(2) { [0]=> string(7) "num_foo" [1]=> string(7) "num_bar" }
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
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
preferences:
167.97 ms | 409 KiB | 5 Q