PDO refactoring for code simplification (#2522)

* PDO refactor

* Automatic prefix when using the syntax `_tableName`
* Uniformity: MySQL is now PDO::ATTR_EMULATE_PREPARES = false just like SQLite and PostgreSQL, with consequences such as only one statement per query
* Use PDO methods exec(), query(), prepare() + execute() in a more efficient way
* Remove auto-update SQL code for versions older than FreshRSS 1.5 (3 years old)
* The name of the default category is set in PHP instead of in the DB (simplies SQL and allows changing the name according to the FreshRSS language)
* Rename `->bd` to `->pdo` (less of a frenshism, and more informative)
* Fix some requests, which were not compatible with MySQL prepared statements

* Whitespace

* Fix syntax for PostgreSQL sequences

+ MySQL install

* Minor formatting

* Fix lastInsertId for PostgreSQL

* Use PHP 5.6+ const

Take advantage of https://github.com/FreshRSS/FreshRSS/pull/2527
https://www.php.net/manual/en/migration56.new-features.php

* A bit of forgotten PHP 5.6 simplification for cURL

* Forgotten $s

* Mini fix custom user config

https://github.com/FreshRSS/FreshRSS/pull/2490/files#r326290346

* More work on install.php but not finished

* install.php working

* More cleaning of PDO in install

* Even more simplification

Take advantage of PDO->exec() to run multiple statements

* Disallow changing the name of the default category

https://github.com/FreshRSS/FreshRSS/pull/2522#discussion_r326967724

1 files changed, 4 insertions, 8 deletions

diff --git a/app/Models/Entry.php b/app/Models/Entry.php
index 3bb977283..d90f828bc 100644
--- a/app/Models/Entry.php
+++ b/app/Models/Entry.php
@@ -327,7 +327,7 @@ class FreshRSS_Entry extends Minz_Model {
 		}
 
 		$ch = curl_init();
-		curl_setopt_array($ch, array(
+		curl_setopt_array($ch, [
 			CURLOPT_URL => $url,
 			CURLOPT_REFERER => SimplePie_Misc::url_remove_credentials($url),
 			CURLOPT_HTTPHEADER => array('Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8'),
@@ -337,13 +337,9 @@ class FreshRSS_Entry extends Minz_Model {
 			//CURLOPT_FAILONERROR => true;
 			CURLOPT_MAXREDIRS => 4,
 			CURLOPT_RETURNTRANSFER => true,
-		));
-		if (version_compare(PHP_VERSION, '5.6.0') >= 0 || ini_get('open_basedir') == '') {
-			curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);	//Keep option separated for open_basedir PHP bug 65646
-		}
-		if (defined('CURLOPT_ENCODING')) {
-			curl_setopt($ch, CURLOPT_ENCODING, '');	//Enable all encodings
-		}
+			CURLOPT_FOLLOWLOCATION => true,
+			CURLOPT_ENCODING => '',	//Enable all encodings
+		]);
 		curl_setopt_array($ch, $system_conf->curl_options);
 		if (isset($attributes['ssl_verify'])) {
 			curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, $attributes['ssl_verify'] ? 2 : 0);