From a98c9851644857e33a73f4e362f2802df8385e59 Mon Sep 17 00:00:00 2001
From: "Bruno O. Notario" <bruno@exacti.com.br>
Date: Thu, 28 Feb 2019 02:20:43 -0300
Subject: [PATCH] Add pagination DB function

---
 system/database/library/db.php | 31 ++++++++++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

diff --git a/system/database/library/db.php b/system/database/library/db.php
index 9c003dc..1dee502 100644
--- a/system/database/library/db.php
+++ b/system/database/library/db.php
@@ -37,7 +37,36 @@ final class DB {
 
   	public function getLastId() {
 		return $this->driver->getLastId();
-  	}	
+  	}
+
+    public function pagination($sql, $pageNum_exibe = 1, $maxRows_exibe = 10, $cache = true, $sqlTotal = null){
+
+        if (($pageNum_exibe >= 1)) {
+            $pageNum_exibe = $pageNum_exibe-1;
+        }
+        $startRow_exibe = $pageNum_exibe * $maxRows_exibe;
+
+        $query_exibe = $sql;
+
+        $query_limit_exibe = sprintf("%s LIMIT %d, %d", $query_exibe, $startRow_exibe, $maxRows_exibe);
+
+        $exibe = $this->query($query_limit_exibe, $cache);
+
+        $re = '/^(SELECT \*)/i';
+
+        $all_exibe_query = ($sqlTotal != null) ? $sqlTotal : ((preg_match($re, $query_exibe)) ? preg_replace($re, "SELECT COUNT(*) as __TOTALdeREG_DB_Pagination", $query_exibe) : $query_exibe);
+
+        $all_exibe = $this->query($all_exibe_query, $cache);
+        $totalRows_exibe = (isset($all_exibe->row['__TOTALdeREG_DB_Pagination'])) ? $all_exibe->row['__TOTALdeREG_DB_Pagination'] : $all_exibe->num_rows;
+
+        $totalPages_exibe = ceil($totalRows_exibe/$maxRows_exibe);
+
+        $exibe->totalPages_exibe = $totalPages_exibe;
+        $exibe->totalRows_exibe = $totalRows_exibe;
+        $exibe->pageNum_exibe = $pageNum_exibe+1;
+
+        return $exibe;
+    }
 	
 	private function Cache($sql) {
 		if(class_exists('Caches')) {