I can put php code anywhere in my php file, but if i put the php code within the tags it simply will not work.... What am I doing wrong?
<html>
<head>
<?php
$hello3 = 'hello3';
echo 'hello1';
?>
<script>
<?php echo 'hello2'; ?>
$(document).ready(function(){
$("#target").click(function(){
alert('hello');
});
});
</script>
<?php echo $hello3; ?>
</head>
<body>
<button type="button" id="target">Press Me</button>
</body>
</html>
when I execute this page I get this displayed on my screen:
hello1hello3 (then the button)
the echo within the script tags will not execute... at all.
This is the HTML equivalent of your code:
<html>
<head>
hello1
<script>
hello2
$(document).ready(function(){
$("#target").click(function(){
alert('hello');
});
});
</script>
hello3
</head>
<body>
<button type="button" id="target">Press Me</button>
</body>
</html>What's wrong with your output?
</div>
Yes this does execute. But items in the <script> tag are not displayed on the screen unless done so by a function or method. You just have items like hello2; in JavaScript. For example what would you expect so see if you had this:
<script>
hello1;
</script>
Well, nothing would be on the screen. You are just creating global variables, which are not defined, so what would happen? Try adding some code for example a simple alert:
<script>
<?php echo 'alert("hello")'; ?>
</script>
When writing PHP the items you echo would be exactly the same as you were writing JavaScript normally. So the same rules for writing JavaScript apply. The above item would look like so after PHP executes:
<script>
alert("hello")
</script>
The output of your PHP, within the script element, looks like this:
hello2 $(document).ready(function(){
$("#target").click(function(){
alert('hello');
});
});It immediately falls over (with a reference error) because you try to use the variable hello2 without declaring it.
Were that not the cause, it would then fall over because you try to use the variable $ without declaring it (i.e. by including jQuery in your script).
The PHP is executing fine. You are just writing PHP that generates completely broken JavaScript.
</div>