IntlChar::isdefined
(PHP 7)
IntlChar::isdefined — Check whether the code point is defined
Description
public static bool IntlChar::isdefined ( mixed $codepoint )Determines whether the specified code point is "defined", which usually means that it is assigned a character.
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() - Check if code point is a digit character
- IntlChar::isalpha() - Check if code point is a letter character
- IntlChar::isalnum() - Check if code point is an alphanumeric character
- IntlChar::isupper() - Check if code point has the general category "Lu" (uppercase letter)
- IntlChar::islower() - Check if code point is a lowercase letter
- IntlChar::istitle() - Check if code point is a titlecase letter
← IntlChar::iscntrl
IntlChar::isdigit →
? 1997–2017 The PHP Documentation GroupLicensed under the Creative Commons Attribution License v3.0 or later.
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