announce support pg

nexus/Database/DBInterface.php

@@ -1,6 +1,8 @@
 <?php
 namespace Nexus\Database;
 
+use PDOStatement;
+
 interface DBInterface
 {
     public function connect($host, $username, $password, $database, $port, $driver = 'mysql');
@@ -29,4 +31,6 @@ interface DBInterface
 
     public function freeResult($result);
 
+    public function prepare(string $sql): PDOStatement;
+
 }

nexus/Database/DBMysqli.php

@@ -92,4 +92,9 @@ class DBMysqli implements DBInterface
         return $mysqliResult->free_result();
     }
 
+    public function prepare(string $sql): \PDOStatement
+    {
+        throw new \RuntimeException("mysqli not supported");
+    }
+
 }

nexus/Database/DBPdo.php

@@ -125,4 +125,9 @@ class DBPdo implements DBInterface
         return $stmt->closeCursor();
     }
 
+    public function prepare(string $sql): \PDOStatement
+    {
+        return $this->lastStmt = $this->pdo->prepare($sql);
+    }
+
 }

nexus/Database/NexusDB.php

@@ -151,6 +151,11 @@ class NexusDB
         return $this->driver->freeResult($result);
     }
 
+    public function prepare(string $sql)
+    {
+        return $this->driver->prepare($sql);
+    }
+
     public function isConnected()
     {
         return $this->isConnected;
@@ -506,4 +511,15 @@ class NexusDB
         return compact('version', 'match', 'minVersion', 'dbType');
     }
 
+    public static function unixTimestampField(string $field): string
+    {
+        if (self::isMysql()) {
+            return sprintf("UNIX_TIMESTAMP(%s)", $field);
+        } elseif (self::isPgsql()) {
+            return sprintf("EXTRACT(EPOCH FROM %s)", $field);
+        } else {
+            throw new \RuntimeException('Not supported database.');
+        }
+    }
+
 }

nexus/Database/helpers.php

@@ -65,3 +65,8 @@ function mysql_free_result($result)
 {
     return NexusDB::getInstance()->freeResult($result);
 }
+
+function mysql_prepare(string $sql): \PDOStatement
+{
+    return NexusDB::getInstance()->prepare($sql);
+}