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<?php $strings = [ 'stage', // expect empty string '8.-10. stage', // expect 8 '8. stage', // expect 8 '8.-10. stage 1st', // expect 8 'Test 8. stage 2020', // expect 8 'Test 8.-10. stage - 2020 test', // expect 8 'A1B2C3D4D5E6F7G8', // expect 1 '1000', // expect 1000 'Test 2020', // ecpect 2020 ]; var_export( preg_replace('/^\D+|\d+\K.*/', '', $strings) );
Output for 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array ( 0 => '', 1 => '8', 2 => '8', 3 => '8', 4 => '8', 5 => '8', 6 => '1', 7 => '1000', 8 => '2020', )
preferences:
140.76 ms | 407 KiB | 5 Q