Escape PHP in String

Question

I have tried searching for a way to escape php in a string and have been unsuccessful. I basically want to be able to write a string that contains php without php parsing it.

The error:

Undefined Variable

Code

$file = fopen("test.php", "w");
$content = "<?php echo $somevariable; ?>";
fwrite($file, $content);

*updated to show variable in string.

PHP will not execute embedded PHP. What you have will work exactly as you want: The characters <, ?, p etc... will get written out to the file. — Marc B
– Marc B, Commented Sep 5, 2014 at 20:17
Thanks for the replies, the single quotes seem to have done it. I didn't mention above that I had a variable in the string that was causing an undefined variable error. — Ralph
– Ralph, Commented Sep 5, 2014 at 20:20

Gergo Erdosi · Accepted Answer · 2014-09-05 20:25:52Z

4

Variables in double quotes are expanded:

The most important feature of double-quoted strings is the fact that variable names will be expanded. See string parsing for details.

Use either single quotes:

$content = '<?php echo $somevariable; ?>';

or a nowdoc:

$content = <<<'EOD'
<?php echo $somevariable; ?>
EOD;

A nowdoc is specified similarly to a heredoc, but no parsing is done inside a nowdoc.

answered Sep 5, 2014 at 20:25

Gergo Erdosi

42.3k21 gold badges122 silver badges95 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Escape PHP in String

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related