GoLang IntlChar::isdefined

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PHP IntlChar::isdefined

PHP original manual for IntlChar::isdefined [ show | php.net ]

(PHP 7)

IntlChar::isdefined — Check whether the code point is defined

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).

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}")

Returns TRUE if codepoint is a defined character, FALSE if not.

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)