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Online Sandbox for SQL and PHP: Write, Run, Test, and Share SQL Queries and PHP Code
<?php
function encode($str, $shift) {
$chars = str_split($str);
$newStr = "";
foreach ($chars as &$c) {
$c = chr($c) + $shift;
$newStr.= ord($c);
echo $newStr;
}
}
encode("Hello", 4);