mb_strtoupper

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

mb_strtoupper — Make a string uppercase

Beschreibung

mb_strtoupper(string $string, ?string $encoding = null): string

Returns string with all alphabetic characters converted to uppercase.

Parameter-Liste

string: The string being uppercased.
encoding: Der Parameter encoding legt die Zeichenkodierung fest. Wird er nicht übergeben, so wird die interne Zeichenkodierung genutzt.

Rückgabewerte

string with all alphabetic characters converted to uppercase.

Beispiele

Beispiel #1 mb_strtoupper() example

<?php
$str = "Mary Had A Little Lamb and She LOVED It So";
$str = mb_strtoupper($str);
echo $str; // Prints MARY HAD A LITTLE LAMB AND SHE LOVED IT SO
?>

Beispiel #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; // Prints ΤΆΧΙΣΤΗ ΑΛΏΠΗΞ ΒΑΦΉΣ ΨΗΜΈΝΗ ΓΗ, ΔΡΑΣΚΕΛΊΖΕΙ ΥΠΈΡ ΝΩΘΡΟΎ ΚΥΝΌΣ
?>

Anmerkungen

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/reports/tr21/.

Siehe auch

mb_strtolower() - Make a string lowercase
mb_convert_case() - Perform case folding on a string
strtoupper() - Wandelt alle Zeichen eines Strings in Großbuchstaben um

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User Contributed Notes 1 note

down

serg_x ¶

5 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;
}

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