(PHP 7)
IntlChar::isgraph — Check if code point is a graphic character
Determines whether the specified code point is a "graphic" character (printable, excluding spaces).
TRUE for all characters except those with general categories "Cc" (control codes), "Cf" (format controls), "Cs" (surrogates), "Cn" (unassigned), and "Z" (separators).
Returns TRUE if
codepoint is a "graphic" character, FALSE if not.
Example #1 Testing different code points
<?php
var_dump(IntlChar::isgraph("A"));
var_dump(IntlChar::isgraph("1"));
var_dump(IntlChar::isgraph("\u{2603}"));
var_dump(IntlChar::isgraph("\n"));
?>
以上例程会输出：
bool(true) bool(true) bool(true) bool(false)