run php echo inside a php echo?

Question

I have a echo call outputting some HTML code, some of this code include a css, in this css i'm trying to execute some php code.

variable set before echo

  $bg = array('bg-01.jpg', 'bg-02.jpg', 'bg-03.jpg', 'bg-04.jpg', 'bg-05.jpg', 'bg-06.jpg', 'bg-07.jpg' );
$i = rand(0, count($bg)-1);
$selectedBg = "$bg[$i]";

Then in the echo:

    echo'
<html>
<head>
<title>Test</title>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1251">
<META NAME="ROBOTS" CONTENT="NOINDEX, NOFOLLOW">
    <link type="image/x-icon" href="test.ico" rel="shortcut icon"  />
<style>
html {background:#000;
background: url("<?php echo $selectedBg; ?>") no-repeat fixed 0% 0% / cover #000;}

i've tried several of ways to run the php inside the echo but i fail, if i put the php inside '' tags page will not load, what am i doing wrong here or is it impossible to echo new php code inside a php echo?

Thank you!

score 3 · Accepted Answer · answered May 13 '15 at 07:59

3

You should use string concatenation:

echo'
<html>
<head>
<title>Test</title>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1251">
<META NAME="ROBOTS" CONTENT="NOINDEX, NOFOLLOW">
    <link type="image/x-icon" href="test.ico" rel="shortcut icon"  />
<style>
html {background:#000;
background: url("'.$selectedBg.'") no-repeat fixed 0% 0% / cover #000;}';

answered May 13 '15 at 07:59

Jazi

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Awesome this worked, i though i did try this but i must have typo'd it – karnehe May 13 '15 at 08:01
@karnehe Glad to help ;). Please, check this post as a proper answer for Your question :). Cheers. – Jazi May 13 '15 at 08:04

score 3 · Answer 2 · answered May 13 '15 at 08:00

So there is actually a misunderstanding :)

Since echo is a php instruction, you do not have to re-open and re-close php tags () but you can simply use concatenation. Example :

echo "Hello there ". $name ." ! How are u ?";

Opening and closing php tags is only usefull when you're in a HTML display such as :

<span>Hello <?php echo $name; ?> ! How are u ? </span>

This is really some basic stuff and you should really get used to it :)

score 0 · Answer 3 · answered May 13 '15 at 08:00

 echo'
<html>
<head>
<title>Test</title>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1251">
<META NAME="ROBOTS" CONTENT="NOINDEX, NOFOLLOW">
    <link type="image/x-icon" href="test.ico" rel="shortcut icon"  />
<style>
html {background:#000;
background: url("'.$selectedBg.'") no-repeat fixed 0% 0% / cover #000;}

run php echo inside a php echo?

3 Answers3