IntlChar::isdefined
Check whether the code point is defined
Description
public static bool IntlChar::isdefined
( mixed $codepoint
)
TRUE for general categories other than "Cn" (other, not assigned).
Note:
Note that non-character code points (e.g., U+FDD0) are not "defined" (they are Cn), but surrogate code points are "defined" (Cs).
Parameters
-
codepoint
-
The integer 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 a defined character, FALSE if not.
Examples
Example #1 Testing different code points
<?php
var_dump(IntlChar::isdefined("A"));
var_dump(IntlChar::isdefined(" "));
var_dump(IntlChar::isdefined("\u{FDD0}"));
?>
The above example will output:
bool(true)
bool(true)
bool(false)
See Also
- IntlChar::isdigit
- IntlChar::isalpha
- IntlChar::isalnum
- IntlChar::isupper
- IntlChar::islower
- IntlChar::istitle