Detailed explanation of the mysqli_num_rows() method in PHP

In php, you need to connect to the database frequently. mysqli is a way to connect to the database in php. This article will take you to take a look, mysqli_num_rows()Method.

1. Connecting to the database

<?php
$servername="localhost";
$username="root";
$password="root123456";
$dbname="my_database";

$link = mysqli_connect($servername, $username, $password, $dbname);

/* check connection */
if (mysqli_connect_errno()) {
    printf("连接失败: %s\n", mysqli_connect_error());
    exit();
}

2.Using the mysqli_num_rows() method

$sql="select * from fate";
if ($result = mysqli_query($link,$sql)) {

    $row = mysqli_num_rows($result);

    printf("查询条数.%d\n", $row);
    mysqli_free_result($result);
}
mysqli_close($link);

输出：查询条数.7

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