IntlChar::islower
Check if code point is a lowercase letter
Description
public static boolnull IntlChar::islower(intstring $codepoint)
Note:
This misses some characters that are also lowercase but have a different general category value. In order to include those, use IntlChar::isULowercase.
Parameters
-
codepoint
-
The int codepoint value (e.g. 0x2603 for U+2603 SNOWMAN), or the character encoded as a UTF-8 string (e.g. "\u{2603}")
Return Values
Returns true if
codepoint is an Ll lowercase letter, false if not. Returns null on failure.
Examples
Example #1 Testing different code points
<?php
var_dump(IntlChar::islower("A"));
var_dump(IntlChar::islower("a"));
var_dump(IntlChar::islower("Φ"));
var_dump(IntlChar::islower("φ"));
var_dump(IntlChar::islower("1"));
?>
The above example will output:
bool(false)
bool(true)
bool(false)
bool(true)
bool(false)
See Also
- IntlChar::isupper
- IntlChar::istitle
- IntlChar::tolower
- IntlChar::toupper
IntlChar::PROPERTY_LOWERCASE- ctype_lower