How To add Php code snippest at the begineing of a .php file using php

Question

I have a .php file, say "index.php" . This file is being generated dynamically and I want to add the following code at the beginning of the file.

   <?php
        session_start();
    require_once('login/auth.php');
        require_once('config.php');
   ?>

Intention is to force user to sign up or sign in before they see this file. But I wasted a whole day and turned into nothing as resultant file is blank. what I found is , its facing problem with <?php and ?>

if I replace them with their equivalent entities <?php and ?> then they gets added easily but its not what I wanted.

So , question is how to add this original code to the beginning on file dynamically. Can someone help please?

This is most certainly now how PHP is meant to work. There's probably a better solution than code generation for whatever problem you're tackling. — user229044
– user229044 ♦, Commented Jul 2, 2013 at 22:06
If you can use `.htaccess to set PHP config options: php.net/manual/en/ini.core.php#ini.auto-prepend-file — C3roe
– C3roe, Commented Jul 2, 2013 at 22:09
Those spaces will cause session_start to error out because headers are already sent. — Marcel Korpel
– Marcel Korpel, Commented Jul 2, 2013 at 22:10

Marc B · Accepted Answer · 2013-07-02 22:06:23Z

1

<?php

$preamble = <<<EOL
<?php 
   session_start();
   yada;
   yada;
   yada;
?>
EOL;

file_put_contents('index.php', $preamble);

answered Jul 2, 2013 at 22:06

Marc B

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Comments

HartleySan · Accepted Answer · 2013-07-02 22:08:13Z

0

How about the following:

<?php

  file_put_contents('index.php', "   <?php
        session_start();
    require_once('login/auth.php');
        require_once('config.php');
   ?>");

Edit: Marc's idea to use heredoc syntax may be better in your situation, given the variety of text you may want to write to a file.

answered Jul 2, 2013 at 22:08

HartleySan

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4 Comments

Marcel Korpel Over a year ago

Those spaces will cause session_start to error out because headers are already sent.

HartleySan Over a year ago

I just ran it on my localhost and it was fine.

Marcel Korpel Over a year ago

No, I didn't mean this code, I meant the resulting index.php. That will break because of the spaces before the opening <?php tag.

HartleySan Over a year ago

That I don't know about. I didn't actually test the resulting script. I simply gave the OP what he asked for (and his sample code has spaces at the beginning).

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