PHP gets information about a connection

php editor Strawberry will introduce you how to use PHP to obtain a connection information. In web development, obtaining connection information is a common operation, which can help us understand the status of the connection, IP address, browser information, etc. We can easily achieve this function through PHP's built-in functions and variables. Next, we will introduce in detail how to obtain connection information through PHP to help you better master this technique.

Get connection information in PHP

In php, you can obtain connection information through the following methods:

1. mysqli_get_connection_stats():

This function returns an array containing the following information:

• total_connect_time: Total time (seconds) spent establishing a connection.
• total_connect_attempts: The number of attempts to establish a connection.
• avg_connect_time: Average connection time (seconds).
• max_connect_time: Maximum connection time (seconds).
• total_recv_bytes: Total number of bytes received from server.
• total_send_bytes: The total number of bytes sent to the server.

Example:

$Mysqli = new mysqli("localhost", "user", "passWord", "database");
$stats = $mysqli->get_connection_stats();

echo "Total connect time: " . $stats["total_connect_time"] . " seconds
";
echo "Total connect attempts: " . $stats["total_connect_attempts"] . "
";
echo "Average connect time: " . $stats["avg_connect_time"] . " seconds
";
echo "Maximum connect time: " . $stats["max_connect_time"] . " seconds
";
echo "Total received bytes: " . $stats["total_recv_bytes"] . " bytes
";
echo "Total sent bytes: " . $stats["total_send_bytes"] . " bytes
";

2. mysqli_get_connection_info():

This function returns a string containing the following information:

• Protocol: The protocol used for the connection.
• Server: The host name or IP address of the server.
• Server version: The version of the server.
• Threaded: Whether a threaded safe connection is used.
• SSL: Whether an SSL connection is used.
• Persistent: Whether a persistent connection is used.
• Character set: The character set used in the connection.

Example:

$mysqli = new mysqli("localhost", "user", "password", "database");
$info = $mysqli->get_connection_info();

echo "Protocol: " . $info . "
";
echo "Server: " . $info . "
";
echo "Server version: " . $info . "
";
echo "Threaded: " . ($info ? "Yes" : "No") . "
";
echo "SSL: " . ($info ? "Yes" : "No") . "
";
echo "Persistent: " . ($info ? "Yes" : "No") . "
";
echo "Character set: " . $info . "
";

3. PDO::getAttribute():

For databases connected using PDO, you can use the PDO::getAttribute() function to obtain connection information:

• PDO::ATTR_SERVER_INFO: Server information string.
• PDO::ATTR_SERVER_VERSION: Server version.
• PDO::ATTR_PERSISTENT: Whether persistent connections are used.

Example:

$pdo = new PDO("mysql:host=localhost;dbname=database", "user", "password");
$serverInfo = $pdo->getAttribute(PDO::ATTR_SERVER_INFO);
$serverVersion = $pdo->getAttribute(PDO::ATTR_SERVER_VERSION);
$persistent = $pdo->getAttribute(PDO::ATTR_PERSISTENT);

echo "Server info: " . $serverInfo . "
";
echo "Server version: " . $serverVersion . "
";
echo "Persistent: " . ($persistent ? "Yes" : "No") . "
";

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