How to do connection in pgsql database through php

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This content was added on Promote Content at 04 Dec 2021 and got 888 visits untill now.

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To connect to a PostgreSQL database from PHP, you can use the following steps: Install the PHP PostgreSQL extension if it is not already installed. This can usually be done by installing the php-pgsql package through your package manager. Create a PHP script that will handle the database connection. In this script, use the pg_connect function to connect to the database. This function takes three arguments: the connection string, the username, and the password. $connection_string = "host=localhost port=5432 dbname=database_name user=username password=password"; $conn = pg_connect($connection_string); If the connection was successful, pg_connect will return a connection resource. You can then use this resource to issue queries to the database. if ($conn) { // connection was successful, issue queries here } else { // connection failed, handle the error } To issue a query, use the pg_query function, which takes two arguments: the connection resource and the query string. $result = pg_query($conn, "SELECT * FROM users"); To process the results of a SELECT query, you can use the pg_fetch_assoc function in a loop. This function returns an associative array representing the next row in the result set, or FALSE if there are no more rows. while ($row = pg_fetch_assoc($result)) { // process the row } Don't forget to close the connection when you are done. You can use the pg_close function for this. pg_close($conn);