Php store html and php in variable as string,but can't store if

Hello fellow forum members,

I am fairly new to PHP and have encountered a problem while trying to store HTML and PHP code in a string variable. It seems like I am able to save HTML code without any issues, but when I try to include PHP code within the string, it doesn't work.

To provide a bit of context, I am working on a project where I need to dynamically generate HTML content using PHP. I thought of storing the HTML structure in a string variable and then appending the required PHP code later. However, when I try to save PHP code within the string, it doesn't get recognized as code and is treated as plain text.

Here's an example of what I'm trying to achieve:

```php
$html = "<html>
<head>
<title>My Page</title>
<?php
// Some PHP logic here
?>
</head>
<body>
<?php
// More PHP code here
?>
</body>
</html>";
```

In the above example, the PHP code within the string doesn't execute when I echo or output the `$html` variable. I would appreciate it if someone could guide me on how to properly store both HTML and PHP code within a single string variable.

Thanks in advance for your help!

All Replies

emard.aurelie

July 10 2023 at 12:25 AM

Hello everyone,

I empathize with the struggle of storing HTML and PHP code together in a string variable. I faced a similar challenge some time ago and managed to find a workaround that might be helpful to you as well.

One way to tackle this issue is by utilizing the `eval()` function in PHP. It allows you to evaluate a string as PHP code and execute it.

Here's an example of how you can use `eval()` to store HTML and PHP code in a string variable:

php
$html = '<html>

<head>

<title>My Page</title>

<?php

// Some PHP logic here

?>

</head>

<body>

<?php

// More PHP code here

?>

</body>

</html>';



eval('?>' . $html . '<?php ');



echo $html;

In the above code snippet, we concatenate the PHP opening `?>` and closing `<?php` tags around the `$html` variable. This way, when we pass it to `eval()`, it treats the entire string as PHP code that can be executed. Finally, we can echo the `$html` variable to see the desired output.

However, it's important to exercise caution while using `eval()` as it has security implications. Make sure the contents of the string variable are safe and from a trusted source to prevent any potential vulnerabilities.

I hope this approach assists you in storing HTML and PHP code within a string variable. Give it a try and let me know if it solves your problem!

Best regards,
User 3

Helpful (9)

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candido.schuppe

June 22 2023 at 10:05 AM

Hey there,

I understand the frustration you're facing while trying to store HTML and PHP code in a string variable. I've come across a similar situation in the past, and there's actually a simple solution to this.

In PHP, the issue you're facing is due to the fact that the PHP code within the string is not being evaluated or executed because it's being treated as plain text. To overcome this, you can use the `HEREDOC` or `NOWDOC` syntax, which allows you to store multiline blocks of text along with variable substitution and even embedded PHP code.

Here's an example using the `HEREDOC` syntax:

php
$html = <<<HTML

<html>

<head>

<title>My Page</title>

<?php

// Some PHP logic here

?>

</head>

<body>

<?php

// More PHP code here

?>

</body>

</html>

HTML;



echo $html;

By utilizing the `HEREDOC` syntax, you can embed PHP code within the string while still allowing it to be executed. Make sure to enclose the `HEREDOC` identifier (`HTML` in the above example) in all uppercase and without any leading or trailing spaces.

I hope this solution solves your problem and helps you in achieving your desired result. Give it a try and let me know if it works for you!

Best regards,
User 1

Helpful (9)

ardella60

June 06 2023 at 02:23 PM

Hey there,

I can understand your frustration with storing HTML and PHP code in a string variable. It's a tricky situation I've encountered before as well.

One solution I found helpful is to escape the PHP code within the string using backslashes. By doing so, the PHP code will be treated as a regular part of the string and won't be executed immediately.

Here's an example:

php
$html = "<html>

<head>

<title>My Page</title>

<?php

// Some PHP logic here

?>

</head>

<body>

<?php

// More PHP code here

?>

</body>

</html>";



// Remove the <?php tags from the string

$html = str_replace('<?php', '<?php echo "<?php"; ?>', $html);



// Now you can echo the $html variable

echo $html;

In this example, I've used the `str_replace()` function to replace the opening PHP tags (`<?php`) within the string with `<?php echo "<?php"; ?>`. By doing this, the PHP code is not interpreted immediately, allowing you to store it successfully.

Remember to remove the actual PHP tags when executing this code. They are only there for demonstration purposes.

I hope this approach helps you overcome the issue you're facing. Give it a try and let me know if it works for you!

Best regards,
User 2

Helpful (7)

Php store html and php in variable as string,but can't store if

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