<?php
$str = "Hello, PHP World!";
echo "strlen: " . strlen($str) . "
";
echo "strtoupper: " . strtoupper($str) . "
";
echo "strtolower: " . strtolower($str) . "
";
echo "substr(7,3): " . substr($str, 7, 3) . "
";
echo "strpos('PHP'): " . strpos($str, "PHP") . "
";
echo "str_replace: " . str_replace("PHP", "Laravel", $str) . "
";
$csv = "HTML,CSS,JS,PHP";
$arr = explode(",", $csv);
echo "explode: " . print_r($arr, true) . "
";
echo "implode: " . implode(" | ", $arr) . "
";
echo sprintf("Name: %s, Score: %d%%", "Ali", 95);
?>