How to fetch multiple rows at once in PDO?

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How to fetch multiple rows at once in PDO?

There are three ways to fetch multiple rows returned by PDO statement. but for the modern web application we should have our datbase iteractions separated from output and thus the most convenient method would be to fetch all rows at once using fetchAll () method:

How to merge 3 arrays in ascending order?

Given 3 arrays (A, B, C) which are sorted in ascending order, we are required to merge them together in ascending order and output the array D. We have discussed at Merging 2 Sorted arrays .

Can you use PDO to fetch results array in PHP?

So I’ve been reading other posts about PDO but am unsure. Will these two scripts give the same functionality?

When to return an empty array in PDOStatement?

PDOStatement::fetchAll () returns an array containing all of the remaining rows in the result set. The array represents each row as either an array of column values or an object with properties corresponding to each column name. An empty array is returned if there are zero results to fetch, or false on failure.

How to prepare a PDO query multiple times?

For a query that you need to issue multiple times, you will realize better performance if you prepare a PDOStatement object using PDO::prepare() and issue the statement with multiple calls to PDOStatement::execute(). If you do not fetch all of the data in a result set before issuing your next call to PDO::query(), your call may fail.

PDOStatement::fetchAll () returns an array containing all of the remaining rows in the result set. The array represents each row as either an array of column values or an object with properties corresponding to each column name. An empty array is returned if there are zero results to fetch, or false on failure.

How to merge two arrays in sorted order?

Merging two unsorted arrays in sorted order Last Updated: 09-01-2019 Write a SortedMerge () function that takes two lists, each of which is unsorted, and merges the two together into one new list which is in sorted (increasing) order. SortedMerge () should return the new list.

So I’ve been reading other posts about PDO but am unsure. Will these two scripts give the same functionality?