Init Repo

2019-09-06 23:53:10 +08:00
commit f0ef89dfbb
7905 changed files with 914138 additions and 0 deletions
--- a/thinkphp/library/think/db/connector/Mysql.php
+++ b/thinkphp/library/think/db/connector/Mysql.php
@ -0,0 +1,126 @@
+<?php
+// +----------------------------------------------------------------------
+// | ThinkPHP [ WE CAN DO IT JUST THINK ]
+// +----------------------------------------------------------------------
+// | Copyright (c) 2006~2017 http://thinkphp.cn All rights reserved.
+// +----------------------------------------------------------------------
+// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
+// +----------------------------------------------------------------------
+// | Author: liu21st <liu21st@gmail.com>
+// +----------------------------------------------------------------------
+
+namespace think\db\connector;
+
+use PDO;
+use think\db\Connection;
+use think\Log;
+
+/**
+ * mysql数据库驱动
+ */
+class Mysql extends Connection
+{
+
+    protected $builder = '\\think\\db\\builder\\Mysql';
+
+    /**
+     * 解析pdo连接的dsn信息
+     * @access protected
+     * @param array $config 连接信息
+     * @return string
+     */
+    protected function parseDsn($config)
+    {
+        if (!empty($config['socket'])) {
+            $dsn = 'mysql:unix_socket=' . $config['socket'];
+        } elseif (!empty($config['hostport'])) {
+            $dsn = 'mysql:host=' . $config['hostname'] . ';port=' . $config['hostport'];
+        } else {
+            $dsn = 'mysql:host=' . $config['hostname'];
+        }
+        $dsn .= ';dbname=' . $config['database'];
+
+        if (!empty($config['charset'])) {
+            $dsn .= ';charset=' . $config['charset'];
+        }
+        return $dsn;
+    }
+
+    /**
+     * 取得数据表的字段信息
+     * @access public
+     * @param string $tableName
+     * @return array
+     */
+    public function getFields($tableName)
+    {
+        list($tableName) = explode(' ', $tableName);
+        if (false === strpos($tableName, '`')) {
+            if (strpos($tableName, '.')) {
+                $tableName = str_replace('.', '`.`', $tableName);
+            }
+            $tableName = '`' . $tableName . '`';
+        }
+        $sql    = 'SHOW COLUMNS FROM ' . $tableName;
+        $pdo    = $this->query($sql, [], false, true);
+        $result = $pdo->fetchAll(PDO::FETCH_ASSOC);
+        $info   = [];
+        if ($result) {
+            foreach ($result as $key => $val) {
+                $val                 = array_change_key_case($val);
+                $info[$val['field']] = [
+                    'name'    => $val['field'],
+                    'type'    => $val['type'],
+                    'notnull' => (bool) ('' === $val['null']), // not null is empty, null is yes
+                    'default' => $val['default'],
+                    'primary' => (strtolower($val['key']) == 'pri'),
+                    'autoinc' => (strtolower($val['extra']) == 'auto_increment'),
+                ];
+            }
+        }
+        return $this->fieldCase($info);
+    }
+
+    /**
+     * 取得数据库的表信息
+     * @access public
+     * @param string $dbName
+     * @return array
+     */
+    public function getTables($dbName = '')
+    {
+        $sql    = !empty($dbName) ? 'SHOW TABLES FROM ' . $dbName : 'SHOW TABLES ';
+        $pdo    = $this->query($sql, [], false, true);
+        $result = $pdo->fetchAll(PDO::FETCH_ASSOC);
+        $info   = [];
+        foreach ($result as $key => $val) {
+            $info[$key] = current($val);
+        }
+        return $info;
+    }
+
+    /**
+     * SQL性能分析
+     * @access protected
+     * @param string $sql
+     * @return array
+     */
+    protected function getExplain($sql)
+    {
+        $pdo    = $this->linkID->query("EXPLAIN " . $sql);
+        $result = $pdo->fetch(PDO::FETCH_ASSOC);
+        $result = array_change_key_case($result);
+        if (isset($result['extra'])) {
+            if (strpos($result['extra'], 'filesort') || strpos($result['extra'], 'temporary')) {
+                Log::record('SQL:' . $this->queryStr . '[' . $result['extra'] . ']', 'warn');
+            }
+        }
+        return $result;
+    }
+
+    protected function supportSavepoint()
+    {
+        return true;
+    }
+
+}