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<?php preg_match_all('/.*?(?<columnname>`.+?`|\S+)\s*(?<operator>=|<|>|<>)\s*(?<value>`.+?`|\S+)\s*(AND|OR)/', 'algo = asslgo AND caca=8', $matches); var_dump($matches);
Output for 4.4.6 - 4.4.9, 5.2.2 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(8) { [0]=> array(1) { [0]=> string(24) "algo = asslgo AND" } ["columnname"]=> array(1) { [0]=> string(4) "algo" } [1]=> array(1) { [0]=> string(4) "algo" } ["operator"]=> array(1) { [0]=> string(1) "=" } [2]=> array(1) { [0]=> string(1) "=" } ["value"]=> array(1) { [0]=> string(6) "asslgo" } [3]=> array(1) { [0]=> string(6) "asslgo" } [4]=> array(1) { [0]=> string(3) "AND" } }
Output for 5.2.0 - 5.2.1
Warning: preg_match_all(): Compilation failed: unrecognized character after (?< at offset 6 in /in/VLHiu on line 7 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 6 in /in/VLHiu on line 7 array(0) { }
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: unrecognized character after (?< at offset 6 in /in/VLHiu on line 7 array(0) { }