How to convert string to uppercase in php?

How to convert string to uppercase in php ?

or

How to convert string to lowercase in php?

Team Leader Asked on February 11, 2017 in PHP.
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1 Answer(s)
    
    <?php
    
    echo strtoupper("Hello Aviance!");
    
    ?>
    
    Output: HELLO AVIANCE!
    
    
    Team Leader Answered on March 14, 2017.
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