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<?php $array = ['a' => 0, 'b' => 2, 'c' => 1, 'd' => 2, 'e' => 3]; $keys = array_keys($array); foreach ($keys as $i => $key) { if ($array[$key] > ($array[$keys[$i - 1]] ?? $array[$keys[$i + 1]] ?? $array[$key] - 1) && $array[$key] > ($array[$keys[$i - 1]] ?? $array[$keys[$i - 1]] ?? $array[$key] - 1) ) { $result[$key] = $array[$key]; } } var_export($result);
Output for 8.5.0
Warning: Undefined array key -1 in /in/nb8Hv on line 7 Deprecated: Using null as an array offset is deprecated, use an empty string instead in /in/nb8Hv on line 7 array ( 'b' => 2, 'd' => 2, 'e' => 3, )
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 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
Warning: Undefined array key -1 in /in/nb8Hv on line 7 array ( 'b' => 2, 'd' => 2, 'e' => 3, )
Output for 7.4.0 - 7.4.33
Notice: Undefined offset: -1 in /in/nb8Hv on line 7 array ( 'b' => 2, 'd' => 2, 'e' => 3, )
preferences:
188.8 ms | 410 KiB | 5 Q