Mac OS X 10.5 Leopard comes with Apache 2.2.6 and PHP 5.2.4 installed but not enabled. In order to enable them, follow this great tutorial here: http://foundationphp.com/tutorials/php_leopard.php.
After I was able to get Apache and PHP working, I noticed PHP didn’t have many extensions enabled. Specifically, I needed cURL, OpenSSL and SOAP extensions to be enabled. In order to enable more extensions, you will need to recompile the PHP 5 module.
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