array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'fr', ), 'this' => array ( 0 => 'intlchar.isdefined.php', 1 => 'IntlChar::isdefined', ), 'up' => array ( 0 => 'class.intlchar.php', 1 => 'IntlChar', ), 'prev' => array ( 0 => 'intlchar.iscntrl.php', 1 => 'IntlChar::iscntrl', ), 'next' => array ( 0 => 'intlchar.isdigit.php', 1 => 'IntlChar::isdigit', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/intl/intlchar/isdefined.xml', ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); ?>
(PHP 7, PHP 8)
IntlChar::isdefined — Check whether the code point is defined
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
La valeur codepoint de type entier
(i.e. 0x2603
pour U+2603 SNOWMAN), ou le caractère encodé en UTF-8 de type chaîne de caractères
(i.e. "\u{2603}"
)
Returns true
if
codepoint
is a defined character, false
if not. Returns null
on failure.
Exemple #1 Test de différents codepoint
<?php
var_dump(IntlChar::isdefined("A"));
var_dump(IntlChar::isdefined(" "));
var_dump(IntlChar::isdefined("\u{FDD0}"));
?>
L'exemple ci-dessus va afficher :
bool(true) bool(true) bool(false)