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<?php $array=[[8,9,7],[7,8,9,33,21],[11,12,33,21,9,31]]; $unique=preg_match_all('~\b(\d+)\b(?!.*\b\1\b)~',json_encode($array),$out)?$out[0]:[]; sort($unique); var_export($unique);
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 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 - 8.5.1
array ( 0 => '7', 1 => '8', 2 => '9', 3 => '11', 4 => '12', 5 => '21', 6 => '31', 7 => '33', )
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.
preferences:
135.14 ms | 407 KiB | 5 Q