- trim: documentation ( source)
- preg_replace: documentation ( source)
<?php
$inputString = "8";
$pattern = '/[ \-]/';
$replacement = '';
$inputString = preg_replace($pattern,$replacement,$inputString);
$inputString = trim($inputString);
$count = strlen($inputString);
//echo $inputString;exit;
$rem = ($count%3);
if ($rem == 1){
$pos =4;
$count = ($count - $pos);
}
else if($rem == 2)
{
$pos = 2;
$count = ($count - $pos);
}
$phoneNumber = "";
for($k=0;$k<$count;$k++){
if($k % 3 !=0 || $k == 0){
$phoneNumber = $phoneNumber.$inputString[$k];
$phoneNumber = trim($phoneNumber);
}else{
$phoneNumber = $phoneNumber.'-'.$inputString[$k];
}
}
//echo $phoneNumber;exit;
if($rem == 2){
if($count!=0){
$phoneNumber.= '-';
}
$phoneNumber.= $inputString[$count].$inputString[$count+1];
}else if($rem == 1){
if($count!=0){
$phoneNumber.='-';
}
$phoneNumber.= $inputString[$count].$inputString[$count+1].'-'.$inputString[$count+2].$inputString[$count+3];
}
echo $phoneNumber;exit;