Get php trace -on segmentation fault- using xdebug

README.md

• Enable the tracer on your xdebug.ini file (see the xdebug.ini file).
• If you are gonna trace an http request, make sure your xdebug.trace_output_dir is writable by the webserver user (www-data).
• Execute your script or your request. You can use produce_segmentation.php to test.
• See the trace file(s) on your xdebug.trace_output_dir.

produce_segmentation.php

<?php

class foo {
    function fail()
    {
        // This preg_match will produce segmentation fault
        // .ru because Russian people love Adidas jackets like I do. http://weirdrussia.com/2015/01/04/why-is-adidas-so-popular-among-russians
        preg_match("/http:\/\/(.)+\.ru/i", str_repeat("http://google.ru", 2000)); 
    }
}

class bar {
    function doit()
    {
        $destroyer = new foo();
        $destroyer->fail();
    }
}
$obj = new bar();
$obj->doit();

xdebug.ini

; Example: /etc/php5/mods-available/xdebug.ini 

[xdebug]
zend_extension=/usr/lib/php5/20121212/xdebug.so ; Path to your extension

xdebug.auto_trace=1
xdebug.trace_output_dir=/tmp/segmentation/ ; Or whatever path you want to use