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<?php $array = ['45', '21', '45', '45', '45', '29', '35', '35', '21']; $result = []; $last = null; foreach ($array as $v) { if ($last !== $v) { unset($ref); $result[] =& $ref; } $ref[] = $v; $last = $v; } var_export($result);
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.4.16, 8.5.0 - 8.5.1
array ( 0 => array ( 0 => '45', ), 1 => array ( 0 => '21', ), 2 => array ( 0 => '45', 1 => '45', 2 => '45', ), 3 => array ( 0 => '29', ), 4 => array ( 0 => '35', 1 => '35', ), 5 => array ( 0 => '21', ), )
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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78.07 ms | 407 KiB | 5 Q