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<?php $strings = [ 'asds asds asdas dasds', 'asdasd asds asd key1:asds', 'asdasd asdsd key2:asdsd asd key1: asdsad', 'asddfs asfasas key2: asds asd key2', // invalid 'asds key3:sdsd asdsad key1:', // invalid 'asds asds asd key1:asdsd key2: assadas asfsaf', 'asdsd aaa:bbb asds', // invalid 'sds asdsad asdsd :asdsd', // invalid ]; foreach ($strings as $string) { var_export([ $string, preg_match( '/^(?: ?(?:\b(?:key1|key2)(?:: *\S+|(*SKIP)(*FAIL))|[^: ]+))*$/', $string, $m ) ? $m : 'invalid' ]); echo "\n---\n"; }
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
array ( 0 => 'asds asds asdas dasds', 1 => array ( 0 => 'asds asds asdas dasds', ), ) --- array ( 0 => 'asdasd asds asd key1:asds', 1 => array ( 0 => 'asdasd asds asd key1:asds', ), ) --- array ( 0 => 'asdasd asdsd key2:asdsd asd key1: asdsad', 1 => array ( 0 => 'asdasd asdsd key2:asdsd asd key1: asdsad', ), ) --- array ( 0 => 'asddfs asfasas key2: asds asd key2', 1 => 'invalid', ) --- array ( 0 => 'asds key3:sdsd asdsad key1:', 1 => 'invalid', ) --- array ( 0 => 'asds asds asd key1:asdsd key2: assadas asfsaf', 1 => array ( 0 => 'asds asds asd key1:asdsd key2: assadas asfsaf', ), ) --- array ( 0 => 'asdsd aaa:bbb asds', 1 => 'invalid', ) --- array ( 0 => 'sds asdsad asdsd :asdsd', 1 => 'invalid', ) ---
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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