IntlChar::tolower
(PHP 7, PHP 8)
IntlChar::tolower — Make Unicode character lowercase
Description
public static IntlChar::tolower(int|string
$codepoint): int|string|nullThe given character is mapped to its lowercase equivalent. If the character has no lowercase equivalent, the original character itself is returned.
Parameters
-
codepoint -
The int codepoint value (e.g.
0x2603for U+2603 SNOWMAN), or the character encoded as a UTF-8 string (e.g."\u")
Return Values
Returns the Simple_Lowercase_Mapping of the code point, if any;
otherwise the code point itself. Returns null on failure.
The return type is int unless the code point was passed as a UTF-8 string, in which case a string is returned. Returns null on failure.
Examples
Example #1 Testing different code points
<?php
var_dump(IntlChar::tolower("A"));
var_dump(IntlChar::tolower("a"));
var_dump(IntlChar::tolower("Φ"));
var_dump(IntlChar::tolower("φ"));
var_dump(IntlChar::tolower("1"));
var_dump(IntlChar::tolower(ord("A")));
var_dump(IntlChar::tolower(ord("a")));
?>
The above example will output:
string(1) "a" string(1) "a" string(2) "φ" string(2) "φ" string(1) "1" int(97) int(97)
See Also
- IntlChar::totitle() - Make Unicode character titlecase
- IntlChar::toupper() - Make Unicode character uppercase
- mb_strtolower() - Make a string lowercase
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