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<?php function get_numerics ($str) { preg_match_all('/[A-Za-z]/', $str, $matches); return $matches[0]; } $one = 'foo bar 1114 baz (5 qux quux)'; $two = 'bar baz 2 bar'; $three = 'qux bar 12 quux (3 foo)'; $four = 'foo baz 3 bar (13 quux foo)'; print_r(get_numerics($one)); print_r(get_numerics($two)); print_r(get_numerics($three)); print_r(get_numerics($four));
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => f [1] => o [2] => o [3] => b [4] => a [5] => r [6] => b [7] => a [8] => z [9] => q [10] => u [11] => x [12] => q [13] => u [14] => u [15] => x ) Array ( [0] => b [1] => a [2] => r [3] => b [4] => a [5] => z [6] => b [7] => a [8] => r ) Array ( [0] => q [1] => u [2] => x [3] => b [4] => a [5] => r [6] => q [7] => u [8] => u [9] => x [10] => f [11] => o [12] => o ) Array ( [0] => f [1] => o [2] => o [3] => b [4] => a [5] => z [6] => b [7] => a [8] => r [9] => q [10] => u [11] => u [12] => x [13] => f [14] => o [15] => o )

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