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mb_strtolower

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

mb_strtolower — Make a string lowercase

Descrizione

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

Returns string with all alphabetic characters converted to lowercase.

Elenco dei parametri

string

The string being lowercased.

encoding

Il parametro encoding è la codifica dei caratteri. Se è omesso, verrà utilizzata la codifica interna.

Valori restituiti

string with all alphabetic characters converted to lowercase.

Log delle modifiche

Versione Descrizione
8.3.0 Implemented conditional casing rules for the Greek letter sigma.

Esempi

Example #1 mb_strtolower() example

<?php
$str = "Mary Had A Little Lamb and She LOVED It So";
$str = mb_strtolower($str);
echo $str; // Prints mary had a little lamb and she loved it so
?>

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

<?php
$str = "Τάχιστη αλώπηξ βαφής ψημένη γη, δρασκελίζει υπέρ νωθρού κυνός";
$str = mb_strtolower($str, 'UTF-8');
echo $str; // Prints τάχιστη αλώπηξ βαφής ψημένη γη, δρασκελίζει υπέρ νωθρού κυνός
?>

Note

By contrast to strtolower(), '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/.

Vedere anche: