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<?php $nums = [ '5551234', '8045551234', '18045551234', '0018045551234', ]; foreach ($nums as $num) { echo substr($num, -10); echo ' '; echo substr($num, 0, -10); echo PHP_EOL; var_dump( substr($num, 0, -10) ); }
Output for git.master_jit, git.master, rfc.property-hooks
5551234 string(0) "" 8045551234 string(0) "" 8045551234 1 string(1) "1" 8045551234 001 string(3) "001"

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