PHP converts all strings to uppercase or lowercase methods _php Tutorial

PHP converts all strings to uppercase or lowercase methods

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

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

PHP can convert every English character in a string to lowercase or uppercase by using Strtolower and Strtoupper two functions

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$string = "Learn PHP String functions at Jb51.net"; $lower = Strtolower ($string); $upper = Strtoupper ($string); Print ("$lower \ n"); Print ("$upper \ n"); 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 is helpful to everyone's PHP programming.

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