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PHP strtoupper() Function

The strtoupper() function in PHP is used to convert a string to uppercase.

This function is binary-safe. The related functions are as follows:

  • strtolower()
  • lcfirst()
  • ucfirst()
  • ucwords()

Syntax

strtoupper ( string $string )

Parameter

string(required)- This parameter represents the input string.

Return

This function returns a string with all alphabetic characters converted to uppercase.

Example 1

Output

Actual String: PHP is an easy language to learn.
After strtoupper() function...
New string: PHP IS AN EASY LANGUAGE TO LEARN.

Example 2

Output

After strtoupper() function...
 The places to visit in India are as follow: 
 1.TAJ MAHAL 
 2.LOTUS TEMPLE
 3.AKSHARDHAM TEMPLE

Example 3

Output

email id: 
After strtoupper() function...
email id:

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