Php case-sensitive conversion method _ PHP Tutorial

Php case-sensitive conversion method. Php case-insensitive conversion method 1. convert string to lower-case strtolower (): This function converts all characters of the input string parameter to lower-case, and returns the php letter case-sensitive conversion method in a small form.

1. convert string to lowercase

Strtolower (): This function converts all characters of the input string parameter to lowercase, and places the string back in a small form.

2. convert characters into uppercase letters

Strtoupper (): This function is opposite to the strtolower function. it converts all characters of the passed character parameter to uppercase and returns the string in uppercase. the usage is the same as that of strtolowe.

3. convert the first character of the string to uppercase.

Ucfirst (): This function is used to change the first character of a string to uppercase. This function returns the first character in uppercase. the usage is the same as that of strtolowe.

4. convert the first character of each word in the string to uppercase.

Ucwords (): This function converts the first character of each word in the input string to uppercase. for example, "hello world". after this function is processed, "Hello Word" is returned ". the usage is the same as that of strtolowe.

Method 1 for case-insensitive conversion of http://www.bkjia.com/PHPjc/1036684.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/1036684.htmlTechArticlephp letters. convert string to lower-case strtolower (): This function converts all characters of the input string parameter to lower-case, and puts the character back in a small form...