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<?php $str = "12345678"; var_dump( preg_match('/^[A-Z]{1,3}[0-9]{4,10}$/', $str) ); var_dump( preg_match('/^[A-Z]{1,3}?[0-9]{4,10}$/', $str) ); var_dump( preg_match('/([A-Z]{1,3})?[0-9]{4,10}$/', $str) ); var_dump( preg_match('/^([A-Z]{1,3})?[0-9]{4,10}$/', $str) ); var_dump( preg_match('/[A-Z]{0,3}[0-9]{4,10}/', $str) ); var_dump( preg_match('/([A-Z]{1,3})*[0-9]{4,10}$/', $str) );
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
int(0) int(0) int(1) int(1) int(1) int(1)
preferences:
297.37 ms | 406 KiB | 460 Q