PHPWales 2020 - June 3rd to June 4th

mb_strtoupper

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

mb_strtoupperMake a string uppercase

Description

mb_strtoupper ( string $str [, string $encoding = mb_internal_encoding() ] ) : string

Returns str with all alphabetic characters converted to uppercase.

Parameters

str

The string being uppercased.

encoding

The encoding parameter is the character encoding. If it is omitted, the internal character encoding value will be used.

Return Values

str with all alphabetic characters converted to uppercase.

Unicode

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

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).

Examples

Example #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
?>

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

See Also

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User Contributed Notes 1 note

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1
serg_x
2 months 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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