For Loops in PHP 1/7
What's a Loop?
Programming can be tough work, and sometimes it's made tougher by having to do the same thing over and over. Let's say we want to
echo a list ofleap years in the editor. You might think we'd have to type:<?php
echo 2004;
echo 2008;
echo 2012;
// And so on
?>
But there's a better way!
A loop is a useful bit of code that repeats a series of instructions for you. For instance, instead of typing
echomany times like we did above, we can simply use the code in the editor to the right!
Instructions
Check out the
for loop in the editor. See how it echos the value for $leap, adds four to it, then repeats? Click Save & Submit Code to learn how it all works!<html>
<head>
<title>Leap Years</title>
</head>
<body>
<?php
for ($leap = 2004; $leap < 2050; $leap = $leap + 4) {
echo "<p>$leap</p>";
}
?>
</body>
</html>
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