IntlChar::iscntrl
IntlChar::iscntrl
(PHP 7)
IntlChar::iscntrl — Check if code point is a control character
Description
public static bool IntlChar::iscntrl ( mixed $codepoint )
Determines whether the specified code point is a control character.
A control character is one of the following:
- ISO 8-bit control character (U+0000..U+001f and U+007f..U+009f)
IntlChar::CHAR_CATEGORY_CONTROL_CHAR(Cc)
IntlChar::CHAR_CATEGORY_FORMAT_CHAR(Cf)
IntlChar::CHAR_CATEGORY_LINE_SEPARATOR(Zl)
IntlChar::CHAR_CATEGORY_PARAGRAPH_SEPARATOR(Zp)
Parameters
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}")
Return Values
Returns TRUE if codepoint is a control character, FALSE if not.
Examples
Example #1 Testing different code points
<?php
var_dump(IntlChar::iscntrl("A")
var_dump(IntlChar::iscntrl(" ")
var_dump(IntlChar::iscntrl("\n")
var_dump(IntlChar::iscntrl("\u{200e}")
?>
The above example will output:
bool(false)
bool(false)
bool(true)
bool(true)
See Also
- IntlChar::isprint() - Check if code point is a printable character
IntlChar::PROPERTY_DEFAULT_IGNORABLE_CODE_POINT
← IntlChar::isblank
IntlChar::isdefined →
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Licensed under the Creative Commons Attribution License v3.0 or later.
