Esta função é um apelido para: mysqli::__construct()
Although the mysqli::__construct() documentation also includes procedural examples that use the mysqli_connect() function, here is a short example:
Exemplo #1 mysqli_connect() example
<?php
$link = mysqli_connect("127.0.0.1", "my_user", "my_password", "my_db");
if (!$link) {
echo "Error: Unable to connect to MySQL." . PHP_EOL;
echo "Debugging errno: " . mysqli_connect_errno() . PHP_EOL;
echo "Debugging error: " . mysqli_connect_error() . PHP_EOL;
exit;
}
echo "Success: A proper connection to MySQL was made! The my_db database is great." . PHP_EOL;
echo "Host information: " . mysqli_get_host_info($link) . PHP_EOL;
mysqli_close($link);
?>
Os exemplos acima irão imprimir:
Success: A proper connection to MySQL was made! The my_db database is great. Host information: localhost via TCP/IP