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What are some common pitfalls when using the ereg() function in PHP for string validation?

Using the ereg() function in PHP for string validation can lead to security vulnerabilities due to its deprecated status and susceptibility to regex i...

What is the potential issue with executing multiple SQL queries in PHP using mysql_db_query?

Executing multiple SQL queries using mysql_db_query in PHP can lead to SQL injection vulnerabilities if the queries are not properly sanitized. To pre...

What is the significance of register_globals in PHP and how does it affect form submissions?

The significance of register_globals in PHP is that it allows variables to be automatically registered as global variables, which can lead to security...

What are the potential pitfalls of using relative paths in PHP when accessing files?

Using relative paths in PHP when accessing files can lead to issues when the current working directory changes or when the script is included in anoth...

What are the potential pitfalls of using $_REQUEST in PHP for handling user input?

Using $_REQUEST in PHP for handling user input can lead to security vulnerabilities such as injection attacks and cross-site scripting. It is recommen...