Adding PHP code in HTML which is already in PHP? [duplicate] - php

Question

This question already has answers here:
Simple PHP stuff : variable evaluation [duplicate]
(5 answers)
Closed 11 months ago.
Basically, I want to add a PHP variable in HTML, with that HTML already being inserted into a constant, which is in PHP code. Here's what I mean: (obviously this code below is wrong, but imagine I would want to be inserting the $VARIABLE in the URL of the iFrame, for example)
<?php
$VARIABLE = 'example-sub-category';
const EXAMPLE = "<iframe src='http://example.com/$VARIABLE'></iframe>";
?>
What would be the syntax for adding that variable in there?
Thanks in advance!

Answer 1

This is just a basic template. str_replace() should do the trick.
const EXAMPLE = "<iframe src='http://example.com/{{{VARIABLE}}}'></iframe>";
$variable = 'example-sub-category
$merged_content = str_replace('{{{variable}}}', $variable, EXAMPLE);
Note I used {{{}}} to denote the insert. This is not PHP syntax, but you will find templates often use something like that the would not be expected in the text otherwise to denote placeholders.

Answer 2

Have you tried:
<?php
$VARIABLE = 'example-sub-category';
const EXAMPLE = "<iframe src='http://example.com/".$VARIABLE."'></iframe>";
?>

Answer 3

You can insert PHP anywhere in HTML just by defining its tags <?php ?>
<iframe src='http://example.com/<?php echo $VARIABLE; ?>'></iframe>
Using your example:
const EXAMPLE = "<iframe src='http://example.com/" . $VARIABLE . "'></iframe>";

Answer 4

For this kind of task I'd better use sprintf:
$VARIABLE = 'example-sub-category';
const EXAMPLE = "<iframe src='http://example.com/%s'></iframe>";
echo sprintf(self::EXAMPLE, $VARIABLE);

Answer 5

To move in and out of php within your html, use <? [php code here...] and ?> to end php and continue with html. You can escape characters with a back slash \ and using single quotes as Rujikin mentioned above. Or, within PHP, you can echo your html so that you're not bouncing in and out of php.
For example:
some php...
echo '<span style=\"color:#980000\"><strong>\"{$searchTerm}\"</strong></span>';
more php...
Notice that the html is enclosed in single quotes (end-to-end) and inside the single quotes, double quotes are used where required by html, e.g., for the <style> tag.
This example is basically saying, "echo whatever the value of php variable $searchTerm is, put it in quotes that's required by echo, and make it dark blue (#0000FF) and bold (<strong>).
I hope this helps. :)

Answer 6

You can try something like:
<?php
$VARIABLE = 'example-sub-category';
const EXAMPLE = "<iframe src='http://example.com/$VARIABLE'></iframe>";
$newHtml = str_replace('$VARIABLE', $VARIABLE);
?>
As you mentioned your code was fake, so I guess what you need is to replace some places in your HTML strings by a content which is unknown until you php script is executed, right ?
so what you need is to put some place holders and change them later, as I showed in my snippet above.
Hope this works