(PHP 7, PHP 8)
IntlChar::isUWhiteSpace — Check if code point has the White_Space Unicode property
$codepoint): ?boolCheck if a code point has the White_Space Unicode property.
   This is the same as IntlChar::hasBinaryProperty($codepoint, IntlChar::PROPERTY_WHITE_SPACE)
  
Note:
This is different from both IntlChar::isspace() and IntlChar::isWhitespace().
codepointLa 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 has the White_Space Unicode property, false if not. Returns null on failure.
  
Exemple #1 Test de différents codepoint
<?php
var_dump(IntlChar::isUWhiteSpace("A"));
var_dump(IntlChar::isUWhiteSpace(" "));
var_dump(IntlChar::isUWhiteSpace("\n"));
var_dump(IntlChar::isUWhiteSpace("\t"));
var_dump(IntlChar::isUWhiteSpace("\u{00A0}"));
?>
L'exemple ci-dessus va afficher :
bool(false) bool(true) bool(true) bool(true) bool(true)
IntlChar::PROPERTY_WHITE_SPACE