How make long PHP script faster?
<p>I have a task to crawl 100000 URLs and save data in excel sheet &amp; store images in seprate directories, I have written script using Simple HTML DOM and PHP Excel, it processes 4-URLs in 1 minutes approx but become slow gradually as time passes more &amp; more.</p>

<p>I want to make it more faster. I am using OOP approach and have divided different child process into small functions that also helps me to keep variable free of memory. I am using local resources XAMPP on Windows.</p>

<p>Please let me know how to speedup execution to do more &amp; more in less time.</p>

<p>Thanks.</p>