Online PHP editor | perf for rOIl0

<?php $inputString = "80"; $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;

Version	System time (s)	User time (s)	Memory (MiB)
7.0.0	0.003	0.047	20.33
5.6.16	0.013	0.070	20.46
5.6.15	0.010	0.070	18.29
5.6.14	0.000	0.070	18.16
5.6.13	0.017	0.043	18.30
5.6.12	0.003	0.040	21.00
5.6.11	0.010	0.060	20.97
5.6.10	0.020	0.070	21.05
5.6.9	0.010	0.080	20.98
5.6.8	0.013	0.073	20.39
5.5.30	0.003	0.053	18.09
5.5.29	0.013	0.047	17.94
5.5.28	0.013	0.073	20.81
5.5.27	0.007	0.080	20.85
5.5.26	0.010	0.047	20.67
5.5.25	0.003	0.073	20.70
5.5.24	0.017	0.077	20.27