PHP mysqli: set_charset() function
mysqli_set_charset() function / mysqli::set_charset
The mysqli_set_charset() function / mysqli::set_charset specifies the default character set to be used when sending data from and to the database server.
Note: For this function to work on a Windows platform, you need MySQL client library 4.1.11 or above (for MySQL 5.0 you need 5.0.6 or above).
Syntax:
Object oriented style
bool mysqli::set_charset ( string $charset )
Procedural style
bool mysqli_set_charset ( mysqli $link , string $charset )
Parameter:
| Name | Description | Required/Optional | |
|---|---|---|---|
| link | A link identifier returned by mysqli_connect() or mysqli_init() | Required for procedural style only and Optional for Object oriented style | |
| charset | The charset to be set as default. | Required | |
Usage: Procedural style
mysqli_set_charset(connection,charset);
Parameter:
| Name | Description | Required/Optional |
|---|---|---|
| connection | Specifies the MySQL connection to use | Required |
| charset | Specifies the default character set | Required |
Return value:
Returns TRUE on success or FALSE on failure.
Version: PHP 5, PHP 7
Example of object oriented style:
<?php
$mysqli = new mysqli("localhost", "user1", "datasoft123", "hr");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
printf("Initial character set: %s\n", $mysqli->character_set_name());
/* change character set to utf8 */
if (!$mysqli->set_charset("utf8")) {
printf("Error loading character set utf8: %s\n", $mysqli->error);
exit();
} else {
printf("Current character set: %s\n", $mysqli->character_set_name());
}
$mysqli->close();
?>
Output:
Initial character set: latin1 Current character set: utf8
Example of the Procedural style
<?php
$link = mysqli_connect('localhost', 'user1', 'datasoft123', 'hr');
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
printf("Initial character set: %s\n", mysqli_character_set_name($link));
/* change character set to utf8 */
if (!mysqli_set_charset($link, "utf8")) {
printf("Error loading character set utf8: %s\n", mysqli_error($link));
exit();
} else {
printf("Current character set: %s\n", mysqli_character_set_name($link));
}
mysqli_close($link);
?>
Output:
Initial character set: latin1 Current character set: utf8
Example:
<?php
$con=mysqli_connect("localhost","user1","datasoft123","hr");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
// Change character set to utf8
mysqli_set_charset($con,"utf8");
mysqli_close($con);
?>
Sample Output:
Initial character set: latin1 Current character set: utf8
See also
Previous: select_db
Next: set_local_infile_default
PHP: Tips of the Day
To use the constant simply use its name:
Example:
if (EARTH_IS_FLAT) {
print "Earth is flat";
}
print APP_ENV_UPPERCASE;
Output:
or if you don't know the name of the constant in advance, use the constant function:
// this code is equivalent to the above code
$const1 = "EARTH_IS_FLAT";
$const2 = "APP_ENV_UPPERCASE";
if (constant($const1)) {
print "Earth is flat";
}
print constant($const2);
Output:
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