I guess there's an error in Procedural style example as it contain object oriented code:
var_dump($db->get_charset());
mysqli::get_charset
mysqli_get_charset
(PHP 5 >= 5.1.0, PHP 7, PHP 8)
mysqli::get_charset -- mysqli_get_charset — Returns a character set object
说明
面向对象风格
过程化风格
Returns a character set object providing several properties of the current active character set.
返回值
The function returns a character set object with the following properties:
-
charset -
Character set name
-
collation -
Collation name
-
dir -
Directory the charset description was fetched from (?) or "" for built-in character sets
-
min_length -
Minimum character length in bytes
-
max_length -
Maximum character length in bytes
-
number -
Internal character set number
-
state -
Character set status (?)
示例
示例 #1 mysqli::get_charset() example
面向对象风格
<?php
$db = mysqli_init();
$db->real_connect("localhost","root","","test");
var_dump($db->get_charset());
?>过程化风格
<?php
$db = mysqli_init();
mysqli_real_connect($db, "localhost","root","","test");
var_dump(mysqli_get_charset($db));
?>以上示例会输出：
object(stdClass)#2 (7) {
["charset"]=>
string(6) "latin1"
["collation"]=>
string(17) "latin1_swedish_ci"
["dir"]=>
string(0) ""
["min_length"]=>
int(1)
["max_length"]=>
int(1)
["number"]=>
int(8)
["state"]=>
int(801)
}
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