mysql_fetch_array is a PHP function that will allow you to access data stored in the result returned from the TRUE mysql_query if u want to know what is returned when you used the mysql_query function to query a Mysql database.
What is the purpose of using mysql_fetch_array () & Mysqli_num_rows ()?
The purpose of using mysql_fetch_array() and mysqli_num_rows() is to retrieve data from an SQL database and process it within the scope of a program or website.
mysql_fetch_array() is a function which is used to retrieve data from a database table in the form of an array. This array can then be easily manipulated or looped through to display the desired results. mysql_fetch_array() is an extended version of mysql_fetch_row() that enables the retrieval of more than one row of data at a time.
mysqli_num_rows() is a function that returns the number of rows returned by the query. This is useful for determining the size of the data set returned from the query. Knowing the number of rows returned from a query can be useful for debugging, as well as for displaying the relevant information to the user in a more organized fashion.
In summary, mysql_fetch_array() and mysqli_num_rows() are used to access and process data stored in an SQL database. They provide a way to read the contents of a table and make them available for display or further manipulation within the context of a program.
What is the difference between mysql_fetch_array () and Mysql_fetch_object ()?
MySQL_fetch_array() and MySQL_fetch_object() are two different functions used in PHP to access data stored in a database.
MySQL_fetch_array() is used to retrieve a row from a database as an array. This means that the row is stored in the form of an array and can be accessed using its array keys. For example, if a row in the database is composed of two columns, then that row can be accessed using the keys associated with each column.
MySQL_fetch_object() is used to retrieve a row from a database as an object. This means that the row is stored in the form of an object and can be accessed using its object properties. For example, if a row in the database is composed of two columns, then that row can be accessed using the properties associated with each column.
The main difference between these two functions is in the way that data is accessed. MySQL_fetch_array() is used to access data as an array, while MySQL_fetch_object() is used to access data as an object. Therefore, depending on the type of data being accessed, one of these functions may be more suitable than the other.
What is the use of mysql_fetch_row ()?
The mysql_fetch_row() function is a PHP command used in MySQL programming to retrieve data from a result set. This function works in conjunction with a MySQL query, fetching one row at a time from the results. The data retrieved can then be accessed and manipulated as needed. The mysql_fetch_row() function makes it easy to loop through large result sets, ensuring that all data is retrieved accurately. Additionally, mysql_fetch_row() can be used to cycle through queries that output a large number of rows, optimizing the amount of code required for a given task. This is especially useful for tasks such as creating dynamic webpages or creating Excel spreadsheets where a large amount of data is required.
What is the use of Mysql_fetch_assoc () function?
The MySQL_fetch_assoc() is a php function used to retrieve a result row as an associative array. This function returns an associative array that corresponds to the fetched row, or NULL if no more rows. By making use of this function, developers are able to easily retrieve database information as array elements, making life much easier when dealing with database tables.
Essentially, this function takes a database query result and converts it into an array. This allows developers to access the information in an organized, efficient manner. The array elements are database table field names and the array values are the database data associated with it.
In addition to the information retrieved, the MySQL_fetch_assoc() function also returns the row length and the result of each query. This can be invaluable when one is working with a large database, and wants to make sure that all of the information is retrieved properly.
Overall, the MySQL_fetch_assoc() function is a powerful php tool for easily retrieving information from a database table. Developers can use this function to make their life much easier when dealing with database-related projects.
What is the purpose of using mysql_fetch_array () & Mysqli_num_rows ()?
Mysql_fetch_array() is a function used in PHP that retrieves a row from a query result set and returns it as an array. This array can then be used to access the data in that row. It is generally used to loop through a query result set, printing out the data in each row as it goes.
Mysqli_num_rows() is a function used in PHP that returns the number of rows in a query result set. This is useful for determining how many records match a given set of criteria, such as how many records have been added in a certain date range. It is also used to check if a query successfully returned results or not.
