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run code in 150+ php & hhvm versions
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<?php function getPatientCodeDisplay($id='') { $retstr = ""; if(intval($id)>0) { $max_id_length = 8; $id_length = strlen($id); if($id_length <= $max_id_length) { $prefix_code = "AHD"; $final_len = $max_id_length+strlen($prefix_code)-$id_length; $retstr = str_pad($prefix_code, $final_len, "0", STR_PAD_RIGHT); $retstr .= $id; } } return $retstr; } echo getPatientCodeDisplay(1)." >> "; echo getPatientCodeDisplay(12)." >> "; echo getPatientCodeDisplay(123)." >> "; echo getPatientCodeDisplay(1234)." >> "; echo getPatientCodeDisplay(12345)." >> "; echo getPatientCodeDisplay(123456)." >> "; echo getPatientCodeDisplay(1234567)." >> ";
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
AHD00000001 >> AHD00000012 >> AHD00000123 >> AHD00001234 >> AHD00012345 >> AHD00123456 >> AHD01234567 >>