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php strtoupper() function

Chinese translationRecent Updates：2018-04-17 16:18:06

英[ˈʌpə(r)] US[ˈʌpɚ]

adj. Above; higher status; mainland; surface layer

n. upper, boot upper; excitement agent; exciting experience

plural: uppers

php strtoupper() function Video explanation

php strtoupper() function syntax

Function:Convert all characters to uppercase

Syntax: strtoupper(string)

Parameters:

Parameter	Description
string	Required, specified to be converted String

Description: The strtoupper() function converts the string to uppercase. This function is binary safe.

php strtoupper() function example

<?php
$i = "hello world";
$j = strtoupper($i);
echo $j;
?>

Click the "Run instance" button to view the online instance

Output:

HELLO WORLD

<?php
$i = "I'm study in php.cn";
$j = strtoupper($i);
echo $j;
?>

Click the "Run Instance" button to view the online instance

Output:

I'M STUDY IN PHP.CN

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