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Hi have Centos 6 installed and busy installing wkhtmltopdf, I only have one step left and that is to include to the php.ini file, I added it to /etc/php.ini and reloaded apache and the extention does not take effect.

I check /usr/lib64/php/modules/ and the file is present.

Is there anything I did wrong?

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Is it spelled correctly in php.ini? - should be extension=... – meulop Jan 27 '12 at 14:26
@meulop - yes it's like this in php.ini – Roland Jan 27 '12 at 14:31
It is possible that a different configuration file is being loaded. a) Check the output of phpinfo(); for the 'Loaded Configuration File' line - see if you are actually using /etc/php.ini (or php -i | grep php.ini - although this isn't the same in some environments). You may want to create a new ini file under /etc/php.d and add your line to it (e.g. echo "" > /etc/php.d/phpwkhtmltox.ini ) . Finally, don't just add the line to the bottom of php.ini - the file is divided into sections, add it before the Module Settings. – cyberx86 Jan 27 '12 at 14:46
@cyberx86 - Placing a new ini file under /etc/php.d did the trick, thank you for the advice. – Roland Jan 27 '12 at 20:34
up vote 2 down vote accepted

When adding an extension to PHP:

  1. Ensure you adding it to the correct php.ini file:

    • Check the output of phpinfo(); for the 'Loaded Configuration File' line
      • see if you are actually using /etc/php.ini
    • Alternatively try: php -i | grep php.ini
      • some environments (e.g. FastCGI) may load a different config file, so this isn't always reliable

  2. php.ini is an INI file - it is divided into sections (with the section names in square brackets). A directive under the wrong section may not be correctly applied. You should add extensions to the '[PHP]' section (typically the first section, it is often followed by sections for 'Module Settings')

  3. PHP loads the ini files from /etc/php.d - it is good practise to add the extension from there. Create a new ini file, named after your module, containing the 'extension=' directive, and any module specific configuration options. For example:

echo "" > /etc/php.d/phpwkhtmltox.ini

Of course, restart Apache/PHP after you have made the changes, and confirm that they were successful using phpinfo();

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A note on (2) : the default php.ini file found version 5.6.9 of PHP mentions this : "Section headers (e.g. [Foo]) are also silently ignored, even though they might mean something in the future." – Nigralbus Jul 22 '15 at 15:36

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