From 74384ca7f88913b87e982696bb5cb3eb5593c451 Mon Sep 17 00:00:00 2001
From: Andrey Andreev <narf@devilix.net>
Date: Mon, 20 Dec 2021 15:47:39 +0200
Subject: Merge pull request #6074 from philsturgeon/ci3-php8

CodeIgniter 3.0 on PHP 8
---
 system/core/Output.php                                     | 10 +++++++---
 system/database/DB_driver.php                              |  2 +-
 system/database/drivers/pdo/pdo_driver.php                 |  8 ++++++++
 system/database/drivers/pdo/subdrivers/pdo_pgsql_forge.php |  7 +++++++
 4 files changed, 23 insertions(+), 4 deletions(-)

(limited to 'system')

diff --git a/system/core/Output.php b/system/core/Output.php
index cef092600..93d85e798 100644
--- a/system/core/Output.php
+++ b/system/core/Output.php
@@ -299,10 +299,14 @@ class CI_Output {
 	 */
 	public function get_header($header)
 	{
-		// Combine headers already sent with our batched headers
+		// We only need [x][0] from our multi-dimensional array
+		$header_lines = array_map(function ($headers)
+		{
+			return array_shift($headers);
+		}, $this->headers);
+
 		$headers = array_merge(
-			// We only need [x][0] from our multi-dimensional array
-			array_map('array_shift', $this->headers),
+			$header_lines,
 			headers_list()
 		);
 
diff --git a/system/database/DB_driver.php b/system/database/DB_driver.php
index c7bca96d8..6e1d8d11e 100644
--- a/system/database/DB_driver.php
+++ b/system/database/DB_driver.php
@@ -887,7 +887,7 @@ abstract class CI_DB_driver {
 	{
 		return $this->_trans_status;
 	}
-	
+
 	// --------------------------------------------------------------------
 
 	/**
diff --git a/system/database/drivers/pdo/pdo_driver.php b/system/database/drivers/pdo/pdo_driver.php
index d0a2bf959..b2178b684 100644
--- a/system/database/drivers/pdo/pdo_driver.php
+++ b/system/database/drivers/pdo/pdo_driver.php
@@ -131,6 +131,14 @@ class CI_DB_pdo_driver extends CI_DB {
 			$this->options[PDO::ATTR_PERSISTENT] = TRUE;
 		}
 
+		// From PHP8.0, default PDO::ATTR_ERRMODE is changed
+		// from PDO::ERRMODE_SILENT to PDO::ERRMODE_EXCEPTION
+		// as https://wiki.php.net/rfc/pdo_default_errmode
+		if ( ! isset($this->options[PDO::ATTR_ERRMODE]))
+		{
+			$this->options[PDO::ATTR_ERRMODE] = PDO::ERRMODE_SILENT;
+		}
+
 		try
 		{
 			return new PDO($this->dsn, $this->username, $this->password, $this->options);
diff --git a/system/database/drivers/pdo/subdrivers/pdo_pgsql_forge.php b/system/database/drivers/pdo/subdrivers/pdo_pgsql_forge.php
index 187cb2d09..4c3a5aaea 100644
--- a/system/database/drivers/pdo/subdrivers/pdo_pgsql_forge.php
+++ b/system/database/drivers/pdo/subdrivers/pdo_pgsql_forge.php
@@ -53,6 +53,13 @@ class CI_DB_pdo_pgsql_forge extends CI_DB_pdo_forge {
 	 */
 	protected $_drop_table_if	= 'DROP TABLE IF EXISTS';
 
+	/**
+	 * CREATE TABLE IF statement
+	 *
+	 * @var	string
+	 */
+	protected $_create_table_if	= 'CREATE TABLE IF NOT EXISTS';
+
 	/**
 	 * UNSIGNED support
 	 *
-- 
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