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run code in 300+ PHP versions simultaneously
<?php function PHPMailerAutoload($classname) { //Can't use __DIR__ as it's only in PHP 5.3+ $filename = dirname(__FILE__).DIRECTORY_SEPARATOR.'class.'.strtolower($classname).'.php'; if (is_readable($filename)) { require $filename; } } spl_autoload_register('PHPMailerAutoload', true, true);

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