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<?php define('MY_ORDER', [0 => 2, 1 => 3, 2 => 0, 8 => 1]); function keyfn($v) { echo "called for $v\n"; return MY_ORDER[$v]; } $array = [2, 2, 2, 1, 1, 0, 0, 8]; $new = []; foreach ($array as $v) { $new[] = $cache[$v] ??= keyfn($v); } array_multisort($new, $array); var_export($array);
Output for 7.4.0 - 7.4.33, 8.0.1 - 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 - 8.5.1
called for 2 called for 1 called for 0 called for 8 array ( 0 => 2, 1 => 2, 2 => 2, 3 => 8, 4 => 0, 5 => 0, 6 => 1, 7 => 1, )
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.
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153.56 ms | 407 KiB | 5 Q