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<?php $kod = ' - '; if ( preg_match('/kód SAM(?<digit>\d{3}?)/', 'cokoliv (kód SAM123)', $matches) ) {$kod = trim($matches['digit']);} echo $kod;
Output for 4.4.6 - 4.4.9, 5.2.2 - 7.1.0
123
Output for 4.3.11 - 4.4.5, 5.0.0 - 5.2.1
Warning: preg_match(): Compilation failed: unrecognized character after (?< at offset 11 in /in/s9C0A on line 3 -
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: unrecognized character after (?< at offset 11 in /in/s9C0A on line 3 -