- var_dump: documentation ( source)
- round: documentation ( source)
<?php
function reverse($string) {
$substr1 = "";
$substr2 = "";
$strLength = strlen($string);
$strLengthHalf = round(strlen($string) / 2);
for ($i = 0; $i <= $strLengthHalf; $i++) {
$substr1 .= $string[$strLength-$i];
$substr2 .= $string[$strLengthHalf - $i];
}
return $string = $substr1.$substr2;
}
var_dump(reverse('12345'));