- str_pad: documentation ( source)
<?php
function getPatientCodeDisplay($id='') {
$retstr = "";
if(intval($id)>0) {
$max_id_length = 3;
$id_length = strlen($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)." >> ";