How to convert the case of the first character in a string to each other by php

This article mainly introduces "php how to achieve the case conversion of the first character in a string". In daily operation, I believe many people have doubts about how to achieve the case conversion of the first character in the string by php. The editor consulted all kinds of data and sorted out simple and easy-to-use methods of operation. I hope it will be helpful for everyone to answer the question of "how to achieve the case conversion of the first character in the string by php". Next, please follow the editor to study!

Description

1. Lcfirst () can convert the first character in a string to lowercase, and the syntax format is "lcfirst ($string)".

If you want all characters in the string to be lowercase (uniform string case), you can use the strtolower ($string) function.

2. Ucfirst () converts the first character in the string to uppercase, and the syntax format is "ucfirst ($string)".

If you want to capitalize all characters in a string (uniform string case), you can use the strtoupper ($string) function.

Example

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