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What potential pitfalls should be considered when allowing users to upload images in bulk in PHP?

One potential pitfall when allowing users to upload images in bulk in PHP is the risk of exceeding server resources due to large file sizes or a large...

How does the method of accessing a website (e.g., clicking a link vs. typing the URL) affect the availability of the HTTP_REFERER variable in PHP?

When a user accesses a website by clicking a link, the HTTP_REFERER variable is typically set to the URL of the page that linked to the current page....

Are there any potential security risks or pitfalls to consider when using htmlspecialchars(), htmlentities(), and mysql_real_escape_string() in PHP?

When using htmlspecialchars(), htmlentities(), and mysql_real_escape_string() in PHP, it is important to keep in mind that they are not foolproof meth...

What are the advantages and disadvantages of storing dates as integers in a MySQL database in PHP applications?

Storing dates as integers in a MySQL database in PHP applications can be advantageous in terms of storage space and performance, as integers take up l...

What are the potential reasons for a PHP image upload script to work in Internet Explorer but not in Firefox?

The potential reason for a PHP image upload script to work in Internet Explorer but not in Firefox could be due to the way each browser handles file u...