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<?php $arr = array( 0 => "4", 1 => "8", 2 => "15", 3 => "16", 4 => "23", 5 => "42", 6 => "apple", 7 => "water" ); $ints = array_filter($arr, 'is_numeric'); $strs = array_filter($arr, function($v){ return !is_numeric($v); }, ARRAY_FILTER_USE_KEY); $strs = array_filter($arr, function($v, $k){ return !is_numeric($v); }, ARRAY_FILTER_USE_KEY); echo '<pre>'; print_r($ints); print_r($strs); ?>
Output for 8.4.1 - 8.4.14, 8.5.0 - 8.5.1
Fatal error: Uncaught ArgumentCountError: Too few arguments to function {closure:/in/evPYv:14}(), 1 passed and exactly 2 expected in /in/evPYv:14 Stack trace: #0 [internal function]: {closure:/in/evPYv:14}(0) #1 /in/evPYv(14): array_filter(Array, Object(Closure), 2) #2 {main} thrown in /in/evPYv on line 14
Process exited with code 255.
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 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 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
Fatal error: Uncaught ArgumentCountError: Too few arguments to function {closure}(), 1 passed and exactly 2 expected in /in/evPYv:14 Stack trace: #0 [internal function]: {closure}(0) #1 /in/evPYv(14): array_filter(Array, Object(Closure), 2) #2 {main} thrown in /in/evPYv on line 14
Process exited with code 255.
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33
Warning: Missing argument 2 for {closure}() in /in/evPYv on line 14 Warning: Missing argument 2 for {closure}() in /in/evPYv on line 14 Warning: Missing argument 2 for {closure}() in /in/evPYv on line 14 Warning: Missing argument 2 for {closure}() in /in/evPYv on line 14 Warning: Missing argument 2 for {closure}() in /in/evPYv on line 14 Warning: Missing argument 2 for {closure}() in /in/evPYv on line 14 Warning: Missing argument 2 for {closure}() in /in/evPYv on line 14 Warning: Missing argument 2 for {closure}() in /in/evPYv on line 14 <pre>Array ( [0] => 4 [1] => 8 [2] => 15 [3] => 16 [4] => 23 [5] => 42 ) Array ( )
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