PHP include HTML and echo out variable

Question

I am working on a script with templates. So I have this PHP code:

<?php
$string = "TEST";
echo(file_get_contents('themes/default/test.html'));
?>

And I have this HTML (the test.html file):

<html>
  <p>{$string}</p>
</html>

How can I make PHP actually display the variable inside the curly brackets? At the moment it displays {$string}.

P.S: The string might also be an object with many many variables, and I will display them like that: {$object->variable}.

P.S 2: The HTML must stay as it is. This works:

$string = "I'm working!"
echo("The string is {$string}");

I need to use the same principle to display the value.

Possible duplicate of [PHP replace string after using file\_get\_contents](http://stackoverflow.com/questions/14466090/php-replace-string-after-using-file-get-contents) — mplungjan, Jan 18 '16 at 10:48
Checkout this Question on SO: http://stackoverflow.com/questions/15065387/how-replace-variable-in-string-with-value-in-php — Saqib Amin, Jan 18 '16 at 10:48
e.g. `echo str_replace('{$string}', $string, file_get_contents('themes/default/test.html'));` — mplungjan, Jan 18 '16 at 10:50
Thank you, guys, for the links. The thing is the string might be retrieved from an object with many many variables, so I need to use it like in my example. — Sergiu N, Jan 18 '16 at 10:51
Another way: http://stackoverflow.com/questions/17869964/replacing-string-within-php-file — mplungjan, Jan 18 '16 at 10:52
Don't reinvent the wheel, use one of the many readily available solutions. (e.g. [twig](http://twig.sensiolabs.org/), [smarty](http://www.smarty.net/)) — Yoshi, Jan 18 '16 at 11:00
@Yoshi Yep, smarty looks like what I'm looking for. Please post it as an answer so I can accept it. — Sergiu N, Jan 18 '16 at 11:06
long discussion, and got a solution.. from this question read it, i have updated my answer... http://stackoverflow.com/questions/17869964/replacing-string-within-php-file ... and dont forget to appreciate this person.. he deserves for it. — devpro, Jan 18 '16 at 11:08
Nope, it's not what I'm looking for. I still need to modify the HTML. — Sergiu N, Jan 18 '16 at 11:35

score 1 · Answer 1 · answered Jan 18 '16 at 10:58

1

You can use the following code to achieve the desired result:

<?php
$string = "TEST";
$doc = file_get_contents('themes/default/test.html'));
echo preg_replace('/\{([A-Z]+)\}/', "$$1", $doc);
?>

P.S. Please note that it will assume that every string wrapped in { } has a variable defined. So No error checking is implemented in the code above. furthermore it assumes that all variables have only alpha characters.

answered Jan 18 '16 at 10:58

Saqib Amin

1,171
7
16

Perhaps mention that $$1 will replace whatever is found in {} with the contents of the var found – mplungjan Jan 18 '16 at 12:31

devpro · Answer 2 · 2016-01-18T11:06:42.313

0

It's simple to use echo.

<html>
  <p>{<?php echo $string;?>}</p>
</html>

UPDATE 1:

After reading so many comments, found a solution, try this:

$string = "TEST";

$template = file_get_contents('themes/default/test.html', FILE_USE_INCLUDE_PATH);

$page = str_replace('{$string}',$string,$template);

echo $page;

edited Jan 18 '16 at 11:06

answered Jan 18 '16 at 10:45

devpro

16,184
3
27
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Inside themes/default/test.html there is a {$string} it will of course not be rendered as PHP when it is retrieved using file_get – mplungjan Jan 18 '16 at 10:47
I know, but I have to use it like that. I've seen a script before that displayed variables as in my example, but I don't know how to do it. I do not have to use `file_get_contents`, but I have to retrieve the content somehow. – Sergiu N Jan 18 '16 at 10:47
Yes, it's working, but I still need to know the variables when I'm reading the HTML. – Sergiu N Jan 18 '16 at 11:10

Ikhlak S. · Answer 3 · 2016-01-18T10:51:00.107

0

All you PHP must be in a <?php ?> block like this:

<html>
  <p><?php echo "{" . $string . "}";?></p>
</html>

edited Jan 18 '16 at 10:51

answered Jan 18 '16 at 10:47

Ikhlak S.

8,578
10
57
77

But it is not in PHP, it is in HTML – mplungjan Jan 18 '16 at 10:47
Hi! Yes, that's a simple solution, but I have to only use brackets and variable inside. I've seen a script that displayed the variables like in my example before, so I know it's possible. – Sergiu N Jan 18 '16 at 10:49
@mplungjan i don't get it :/. – Ikhlak S. Jan 18 '16 at 10:49
@user3284463 He is trying to build a mini-templating engine that will automatically replace values wrapped in *{}* with variables (if they exist) – Saqib Amin Jan 18 '16 at 10:50
The {$string}] is in the html file he gets using file_get – mplungjan Jan 18 '16 at 10:51
@SaqibAmin yes, that's what it is. – Sergiu N Jan 18 '16 at 10:51
ohh, how can u get the php variables in .html file? – devpro Jan 18 '16 at 10:52
@user3284463 the HTML must stay as it is in my example. I can only update the PHP. – Sergiu N Jan 18 '16 at 10:53
@devpro I'm displaying the HTML in a PHP file, so I'm sure I can. – Sergiu N Jan 18 '16 at 10:53
@devpro he is reading the file using `file_get_contents`, so a big string of HTML document which will have those wrapped variables too, he wants to parse them afterwards – Saqib Amin Jan 18 '16 at 10:54
I don't need to use `file_get_contents`. I have to retrieve the HTML somehow (it doesn't matter how) and display the variables. – Sergiu N Jan 18 '16 at 10:56

score 0 · Answer 4 · answered Jan 18 '16 at 10:48

0

If it is possible to save your replacees in an array instead of normal variables you could use code below. I'm using it with a similar use case.

function loadFile($path) {
    $vars = array();
    $vars['string'] = "value";

    $patterns = array_map("maskPattern", array_keys($vars));
    $result = str_replace($patterns, $vars, file_get_contents($path));

    return $result;
}

function maskPattern($value) {
    return "{$" . $value . "}";
}

answered Jan 18 '16 at 10:48

Alex

789
1
12
29

Yes, but I might have an object with many many variables, so I will need to display them like that: `{$object->variable}`, so this will not work. – Sergiu N Jan 18 '16 at 10:57

score 0 · Answer 5 · answered Jan 18 '16 at 10:59

0

If you know the variable to replace in the html you can use the PHP function 'str_replace'. For your script,

$string = "TEST";

$content = file_get_contents('test.html');
$content = str_replace('{$string}', $string, $content);

echo($content);

answered Jan 18 '16 at 10:59

Babitha

410
5
8

I don't know it. It might be a `$variable` type or retrieved from an object like that: `$object->variable`. – Sergiu N Jan 18 '16 at 11:02

PHP include HTML and echo out variable

5 Answers5