How to query the number of mysql records in php

How to query the number of mysql records in php: 1. Use the "mysql_num_rows" function to query the number of mysql records; 2. Query the number of mysql records by modifying the query statement and using "COUNT(*)" as the query content.

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PHP query statement ,Return the total number of records

PHP query statement, there are two methods to obtain the total number of records queried.

MySQLi process-oriented approach

$sql = "SELECT id, firstname, lastname FROM MyGuests"; $result = mysqli_query($conn, $sql); num_rows=mysqli_num_rows($result);

First, use the mysql_num_rows function, example code:

The second is to modify the query statement, using COUNT(*) as the query content, example Code:

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