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PHP Integrating PHP with Databases Limiting Records in SQL Calculations and Links

Posted by Matt Nickolls
Matt Nickolls
9,895 Points

How does the ampersand (&) allow us to pass the page number?

If $limit_results is not empty Alena notes an "&" is used to get the page number. Could this be explained? She makes the comment in relation to:

if (!empty($section)) { $limit_results = "cat=" . $section . "&; }

1 Answer

Peter Vann
Peter Vann
36,425 Points
Peter Vann
Peter Vann
36,425 Points

Hi Matt!

You have to imagine the queryString she is constructing via concatenation.

The end result would be something like:

Location:catalog.php?cat=sectionName&pg=totalPagesInt

where sectionName would be an actual section name and totalPagesInt would be an actual integer, such as 4.

The & is the convention in query strings that allows you to pass in multiple variables/parameters.

Consider this valid queryString:

localHost/myExamplePage.php?param1=1&param2=2&param3=3

More info:

https://www.encodedna.com/2012/11/querystring-multiple-parameters.htm

I hope that helps.

Stay safe and happy coding!