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This document uses PHP Chinese website manual Release
(PHP 7)
IntlChar::isgraph — Check if code point is a graphic character
$codepoint
)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).
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 "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)