PHP converts a string into uppercase or lowercase methods

This article mainly introduces the PHP to convert all the strings to uppercase or lowercase methods, involving PHP strtolower and strtoupper functions such as the use of skills, need friends can refer to the

This example describes how PHP converts a string to uppercase or lowercase. Share to everyone for your reference. The specific analysis is as follows:

In PHP, you can use Strtolower and strtoupper two functions to convert each English character in a string to lowercase or uppercase

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<?php $string = "Learn php String functions at Jb51.net"; $lower = Strtolower ($string); $upper = Strtoupper ($string); Print ("$lowern"); Print ("$uppern"); Print ("n");?>

The output results are as follows:

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1 2	Learn PHP String functions at Jb51.net learn PHP string functions at Jb51.net

I hope this article will help you with your PHP program design.