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<?php $test1 = '07511 111111'; $test2 = '+447511 111111'; $test3 = '+44 (0) 7511 111111'; //step 1 - reduce it to digits: preg_match_all('([\+]{0,1}[0-9+])', $test1, $digits); var_dump($digits);
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { [0]=> array(11) { [0]=> string(1) "0" [1]=> string(1) "7" [2]=> string(1) "5" [3]=> string(1) "1" [4]=> string(1) "1" [5]=> string(1) "1" [6]=> string(1) "1" [7]=> string(1) "1" [8]=> string(1) "1" [9]=> string(1) "1" [10]=> string(1) "1" } }

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