Summary of several character functions in PHP

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The following is a summary of several character functions in PHP:

1) ucfirst

Change the first letter to uppercase, for example

$ String = "this is my web development blog ";

Echo ucfirst ($ string );

// Output: This is my web development blog

2) lcfirst, which is used to reduce the first letter

$ String = "this is my web development blog ";

Echo lcfirst ($ string );

// Output: This is my web development blog

3) strtoupper: converts the entire string to uppercase.

$ String = "this is my web development blog ";

Echo strtoupper ($ string );

// Output: This is my web development blog

4) strtoplower to reduce the entire string and write it

$ String = "this is my web development blog ";

Echo strtolower ($ string );

// Output: This is my web development blog

(5) ucwords (). The first letter of each word in a sentence can be capitalized, for example

$ String = "this is my web development blog ";

Echo ucwords ($ string );

// Output: This is my web development blog

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