How to convert to lowercase in php?

How to convert to lowercase in php?

1. Convert the string to lowercase

strtolower(): This function will convert all the characters in the string parameter passed in Converts both to lowercase and returns the string in lowercase.

Example:

<?php
    $str = "I want To FLY";
    $str = strtolower($str);
    echo $str;
?>

Output result:

i want to fly

2. Convert characters to uppercase

strtoupper(): The function of this function is the opposite of the strtolower function. It converts all the characters of the incoming character parameter into uppercase and returns the string in uppercase; Usage Same as strtolowe().

3. Convert the first character of the string to uppercase

usfilst(): The function of this function is to convert the first character of the string to uppercase If the character is changed to uppercase, this function returns a string with the first character in uppercase; the usage is the same as strtolowe().

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

ucwords(): This function converts the incoming string The first character of each word becomes uppercase; such as "hello world", after being processed by this function, "Hello Word" will be returned; the usage is the same as strtolowe().

Recommended tutorial: "php tutorial"

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