How Can I Check if mod_rewrite is Enabled in Apache and IIS Using PHP?

Determining Mod_Rewrite Status in PHP for Apache and IIS

Verifying the presence of mod_rewrite, a vital component for URL rewriting, can be crucial in PHP-based web applications. This article explores methods to check for mod_rewrite enablement in both Apache and IIS environments using PHP.

Apache Environment

In Apache, you can employ the apache_get_modules() function within mod_php to retrieve an array of all enabled modules. Simply verify the existence of 'mod_rewrite' using the following code:

<?php
if (in_array('mod_rewrite', apache_get_modules())) {
    // Mod_rewrite is enabled
} else {
    // Mod_rewrite is not enabled
}
?>

IIS Environment

Determining mod_rewrite status in IIS via PHP requires a more intricate approach due to the absence of a standard equivalent to apache_get_modules(). A recommended solution involves executing the following command:

<?php
if (strpos(shell_exec('/usr/local/apache/bin/apachectl -l'), 'mod_rewrite') !== false) {
    // Mod_rewrite is enabled
} else {
    // Mod_rewrite is not enabled
}
?>

This approach leverages shell commands to query the Apache configuration and check for the presence of 'mod_rewrite' within the output.

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