PHP inside HTML attribute

Question

I am looking for some help putting some PHP code inside an HTML attribute. I can't seem to make it work. I think I am escaping the quotes incorrectly or the php is not being concatenated with the html, but I can't seem to figure out. Can someone please offer some advice. Should I put the HTML inside php string and echo is out that way?

<?php $icon_hospital = htmlspecialchars('http://s15.postimg.org/6ct1w2o5z/hospitals.png'); ?>
<?php echo $icon_hospital; ?>

<img src="https://maps.googleapis.com/maps/api/staticmap?size=400x400&markers=icon:"<?php echo $icon_hospital ; ?>"%7CAlbany,+NY&sensor=false">

Answer 1

Use rawurlencode()

<?php $icon_hospital = rawurlencode('http://s15.postimg.org/6ct1w2o5z/hospitals.png'); ?>
<?php  echo $icon_hospital ; ?>
  <img src="https://maps.googleapis.com/maps/api/staticmap?size=400x400&markers=icon:<?php echo $icon_hospital ; ?>%7CAlbany,+NY&sensor=false">

http://php.net/manual/en/function.rawurlencode.php

Answer 2

Try removing the double quotes from the php code in img src.

<?php $icon_hospital = htmlspecialchars('http://s15.postimg.org/6ct1w2o5z/hospitals.png'); ?>
<?php echo $icon_hospital; ?>

<img src="https://maps.googleapis.com/maps/api/staticmap?size=400x400&markers=icon:<?php echo $icon_hospital ; ?>%7CAlbany,+NY&sensor=false">

Answer 3

Use urlencode() instead of htmlspecialchars() and dont use quotes within the url:

<?php $icon_hospital = urlencode('http://s15.postimg.org/6ct1w2o5z/hospitals.png'); ?>
<?php echo $icon_hospital; ?>

<img src="https://maps.googleapis.com/maps/api/staticmap?size=400x400&markers=icon:<?php echo $icon_hospital ; ?>%7CAlbany,+NY&sensor=false">