is_unicode

(PHP 6 >= 6.0.0)

is_unicode — Finds whether a variable is a unicode string

说明

bool is_unicode ( mixed $var )

Finds whether the given variable is a unicode string.

参数

var: The variable being evaluated.

返回值

Returns TRUE if var is a unicode string, FALSE otherwise.

范例

Example #1 is_unicode() example


<?php
// Declare a unicode string
$unicode = 'This is a unicode string';

// Declare a binary string
$binary = b'This is a binary string';

var_dump(is_unicode($unicode), is_unicode($binary));
?>

上例将输出：

bool(true)
bool(false)

参见

is_binary() - Finds whether a variable is a native binary string
is_buffer() - Finds whether a variable is a native unicode or binary string
is_string() - 检测变量是否是字符串
unicode_encode() - Convert a unicode string in any encoding