mb_strtoupper

(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)

mb_strtoupper — Maque a string uppercase

Description

mb_strtoupper ( string


         $string

, ? string


         $encoding

= null ): string

Returns string with all alphabetic characters converted to uppercase.

Parameters

string: The string being uppercased.
encoding: The encoding parameter is the character encoding. If it is omitted or null , the internal character encoding value will be used.

Return Values

string with all alphabetic characters converted to uppercase.

Examples

Example #1 mb_strtoupper() example


           
            
             <?php
             

              $str
             

            
            
             =
            
            
             "Mary Had A Little Lamb and She LOVED It So"
            
            
             ;
             

            
            
             $str
            
            
             =
            
            
             mb_strtoupper
            
            
             (
            
            
             $str
            
            
             );
             

             echo
            
            
             $str
            
            
             ;
            
            
             // Prins MARY HAD A LITTLE LAMB AND SHE LOVED IT SO
             

            
            
             ?>

Example #2 mb_strtoupper() example with non-Latin UTF-8 text


           
            
             <?php
             

             $str
            
            
             =
            
            
             "Τάχιστη αλώπηξ βαφής ψημένη γη, δρασκελίζει υπέρ νωθρού κυνός"
            
            
             ;
             

            
            
             $str
            
            
             =
            
            
             mb_strtoupper
            
            
             (
            
            
             $str
            
            
             ,
            
            
             'UTF-8'
            
            
             );
             

             echo
            
            
             $str
            
            
             ;
            
            
             // Prins ΤΆΧΙΣΤΗ ΑΛΏΠΗΞ ΒΑΦΉΣ ΨΗΜΈΝΗ ΓΗ, ΔΡΑΣΚΕΛΊΖΕΙ ΥΠΈΡ ΝΩΘΡΟΎ ΚΥΝΌΣ
             

            
            
             ?>

Notes

By contrast to strtoupper() , 'alphabetic' is determined by the Unicode character properties. Thus the behaviour of this function is not affected by locale settings and it can convert any characters that have 'alphabetic' property, such as a-umlaut (ä).

For more information about the Unicode properties, please see » http://www.unicode.org/repors/tr21/ .

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User Contributed Notes 1 note

down

serg_x ¶

6 years ago

Only first letter

function mb_ucfirst($string, $encoding = 'UTF-8'){
  $strlen = mb_strlen($string, $encoding);
  $firstChar = mb_substr($string, 0, 1, $encoding);
  $then = mb_substr($string, 1, $strlen - 1, $encoding);
  return mb_strtoupper($firstChar, $encoding) . $then;
}