I am trying to replace values of variable
I have following file
demo.html
<h1>{$heading}</h1>
<p>{$paragraph}</p>
demo.php
$html = file_get_contents('email.html', true);
eval($html);
here I am trying to include that file and replace values of $heading and $paragraph and than echo.
my question is how to do that?
First off, eval() is not needed for this code, as it contains no PHP which needs to be executed. eval() is a very dangerous function.
You contents is in $html as a string, therefore, you can now use a significantly safer function called str_replace() to look for, and replace the value placeholders with the correct data.
The function uses the following arguments: str_replace($search, $replace, $subject), accepts arrays as arguments, and returns the full string with replaced values.
Therefore, to answer your question:
// $html = ...
$search = array(
'{$heading}',
'{$paragraph}'
);
$replace = array(
'My Heading',
'My Paragraph',
);
$replaced_string = str_replace($search, $replace, $html)
eval()'d, there is an alternative option which does the same thing, and is a lot safer :)Use str_replace.
$replace = array(
'{$heading}' => 'Replaced heading',
'{$paragraph}' => 'Replaced paragraph'
);
$html = file_get_contents('email.html', true);
$html = str_reaplce(array_keys($replace), array_values($replace), $html);
echo $html;
Change demo.html to demo.tpl.php
In demo.php just do:
$heading = 'Heading';
$paragraph = 'Para';
include 'demo.tpl.php';
That should work.
OR if no name change is possible, in demo.php do:
$heading = 'Heading';
$paragraph = 'Para';
print str_replace(
array('{$heading}','{$paragraph}'), # use ' not " here!!!
array($heading,$paragraph),
file_get_contents('demo.html'));
Should work too.
