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<?php $str = "dangers:(cloud1条 OR deep1条)"; var_dump(preg_match_all('/((?<key>[^\:\(\)]+)\s*\:\s*\((?<lval>[^\(\)]+)\))?/', $str, $m)); var_dump($m['key'], $m['lval']);
Output for 4.4.6 - 4.4.9, 5.2.2 - 7.1.0
int(2) array(2) { [0]=> string(7) "dangers" [1]=> string(0) "" } array(2) { [0]=> string(21) "cloud1条 OR deep1条" [1]=> string(0) "" }
Output for 5.2.0 - 5.2.1
Warning: preg_match_all(): Compilation failed: unrecognized character after (?< at offset 4 in /in/6Orac on line 4 bool(false) NULL NULL
Output for 4.3.11 - 4.4.5, 5.0.0 - 5.1.6
Warning: preg_match_all(): Compilation failed: unrecognized character after (?< at offset 4 in /in/6Orac on line 4 bool(false) Notice: Undefined index: key in /in/6Orac on line 5 Notice: Undefined index: lval in /in/6Orac on line 5 NULL NULL
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: unrecognized character after (?< at offset 4 in /in/6Orac on line 4 bool(false) Notice: Undefined index: key in /in/6Orac on line 5 Notice: Undefined index: lval in /in/6Orac on line 5 NULL NULL