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 syntax

Function:Convert all characters to uppercase

Syntax:strtoupper(string)

Parameters:

Parameter Description
string Required, specified to be converted String

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

php strtoupper() function example


Run instance»

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Output:

HELLO WORLD

Run Instance»

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Output:

I'M STUDY IN PHP.CN