The proliferation of index.php?id= was a byproduct of the LAMP stack (Linux, Apache, MySQL, PHP) becoming the de facto standard for inexpensive web hosting in the early 2000s. Beginner-friendly PHP tutorials heavily utilized this exact routing method.
Consequently, inurl:"index.php?id=" became the default starting point for automated SQL Injection exploitation. Attackers would append SQL payloads (e.g., ' OR 1=1 --) to the end of the URL. Because the input was unsanitized, the database executed the malicious payload, often allowing attackers to:
The simplicity of the dork, combined with the ease of automation, led to millions of database breaches, making it a staple of "script kiddie" culture and a primary catalyst for the creation of the OWASP Top 10. inurl index.php%3Fid=
For the curious security student, inurl:index.php?id= is just the beginning. Once you understand the pattern, you can find specific database columns or CMS versions.
The "Dorking" Progression:
| Search Query | What it finds |
| :--- | :--- |
| inurl:index.php?id= | Standard SQLi potential |
| inurl:product.php?id= | E-commerce SQLi |
| inurl:index.php?catid= | Category based injection |
| inurl:page.php?file= | Local File Inclusion (LFI) |
| inurl:index.php?page=admin | Admin panel exposure |
Combine these with site:*.edu (educational domains often have old code) or site:*.gov (government legacy systems) to see the scale of the problem. The proliferation of index
If you are using PHP/MySQL, stop using mysql_query() or mysqli_query() with concatenation.
The attacker adds ORDER BY 10-- to guess the number of columns in the SQL query. The simplicity of the dork, combined with the