Medoo是一款轻量级的php数据库操作类，下面不会介绍Medoo的使用方法，想学习Medoo请前往官网自学：http://medoo.in/
在接触Medoo之前，一直是用自己写的php数据库操作类，而发现Medoo立马就喜欢上了它，但是对它的调试方式不喜欢。
Medoo提供两种调试，分别是：
error()
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$database
= new medoo("my_database"); $database->select("bccount", [ "user_name", "email"], [ "user_id[<]"
=> 20]); var_dump($database->error()); // array(3) { [0]=> string(5) "42S02" [1]=> int(1146) [2]=> string(36) "Table ‘my_database.bccount‘ doesn‘t exist" } |
last_query()
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$database
= new medoo("my_database"); $database->select("account", [ "user_name", "email"], [ "user_id[<]"
=> 20]); echo $database->last_query();// SELECT user_name, email FROM account WHERE user_id < 20 |
对于last_query()的使用我个人挺不习惯的，首先使用太麻烦，我坚决认为调试输出报错信息或者sql语句的操作一定要简单便捷，不要为了输出一句sql语句还要写一行代码，这样很容易打断我的思路。
所以我对Medoo的每一个query方法都增加了一个对应调试方法，就是在方法名前增加一个“_”，比如最常见的select方法：
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$database
= new medoo("my_database"); $database->_select("account", [ "user_name", "email"], [ "user_id[<]"
=> 20]);// SELECT user_name, email FROM account WHERE user_id < 20 |
同样其它的insert、update、delete、replace、get、has、count、max、min、avg、sum方法也都可以用这样方式快速输出sql语句。
当然我新增的这种调试方式，也不会影响Medoo原有的两种调试方式。
下面就是修改版源码了，基于Medoo 0.9.1.1修改
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<?php/*! * Medoo database framework * Version 0.9.1.1 * * Copyright 2013, Angel Lai * Released under the MIT license * * @代码小睿 修改如下： * 增加PDO事务 * query exec select insert update delete replace get has count max min avg sum 方法各增加直接输出 sql 语句的方法 * 如 select 则对应 _select 方法 */class medoo{ protected
$database_type = ‘mysql‘; // For MySQL, MSSQL, Sybase protected
$server = ‘localhost‘; protected
$username = ‘username‘; protected
$password = ‘password‘; // For SQLite protected
$database_file = ‘‘; // Optional protected
$port = 3306; protected
$charset = ‘utf8‘; protected
$database_name = ‘‘; protected
$option = array(); // Variable protected
$queryString; // Debug protected
$debug = false; public
function __construct($options){ try{ $commands
= array(); if(is_string($options)){ if(strtolower($this->database_type) == ‘sqlite‘){ $this->database_file = $options; }else{ $this->database_name = $options; } }else{ foreach($options
as $option => $value){ $this->$option
= $value; } } $type
= strtolower($this->database_type); if(isset($this->port) && is_int($this->port * 1)){ $port
= $this->port; } $set_charset
= "SET NAMES ‘"
. $this->charset . "‘"; switch($type){ case
‘mariadb‘: $type
= ‘mysql‘; case
‘mysql‘: // Make MySQL using standard quoted identifier $commands[] = ‘SET SQL_MODE=ANSI_QUOTES‘; case
‘pgsql‘: $dsn
= $type . ‘:host=‘ . $this->server . (isset($port) ? ‘;port=‘
. $port : ‘‘) . ‘;dbname=‘
. $this->database_name; $commands[] = $set_charset; break; case
‘sybase‘: $dsn
= $type . ‘:host=‘ . $this->server . (isset($port) ? ‘,‘
. $port : ‘‘) . ‘;dbname=‘
. $this->database_name; $commands[] = $set_charset; break; case
‘mssql‘: $dsn
= strpos(PHP_OS, ‘WIN‘) !== false ? ‘sqlsrv:server=‘
. $this->server . (isset($port) ? ‘,‘
. $port : ‘‘) . ‘;database=‘
. $this->database_name : ‘dblib:host=‘
. $this->server . (isset($port) ? ‘:‘
. $port : ‘‘) . ‘;dbname=‘
. $this->database_name; // Keep MSSQL QUOTED_IDENTIFIER is ON for standard quoting $commands[] = ‘SET QUOTED_IDENTIFIER ON‘; $commands[] = $set_charset; break; case
‘sqlite‘: $dsn
= $type . ‘:‘ . $this->database_file; $this->username = null; $this->password = null; break; } $this->pdo = new
PDO( $dsn, $this->username, $this->password, $this->option ); foreach($commands
as $value){ $this->pdo->exec($value); } }catch(PDOException $e){ throw
new Exception($e->getMessage()); } } public
function beginTransaction(){ $this->pdo->beginTransaction(); } public
function commit(){ $this->pdo->commit(); } public
function rollBack(){ $this->pdo->rollBack(); } public
function query($query){ $this->queryString = $query; return
$this->debug ? $query
: $this->pdo->query($query); } public
function _query($query){ $this->debug = true; echo
$this->query($query); } public
function exec($query){ $this->queryString = $query; return
$this->debug ? $query
: $this->pdo->exec($query); } public
function _exec($query){ $this->debug = true; echo
$this->exec($query); } public
function quote($string){ return
$this->pdo->quote($string); } protected
function column_quote($string){ return
‘"‘ . str_replace(‘.‘, ‘"."‘, $string) . ‘"‘; } protected
function column_push($columns){ if($columns
== ‘*‘){ return
$columns; } if(is_string($columns)){ $columns
= array($columns); } $stack
= array(); foreach($columns
as $key
=> $value){ preg_match(‘/([a-zA-Z0-9_\-\.]*)\s*\(([a-zA-Z0-9_\-]*)\)/i‘, $value, $match); if(isset($match[1]) && isset($match[2])){ array_push($stack, $this->column_quote( $match[1] ) . ‘ AS ‘
. $this->column_quote( $match[2] )); }else{ array_push($stack, $this->column_quote( $value
)); } } return
implode($stack, ‘,‘); } protected
function array_quote($array){ $temp
= array(); foreach($array
as $value){ $temp[] = is_int($value) ? $value
: $this->pdo->quote($value); } return
implode($temp, ‘,‘); } protected
function inner_conjunct($data, $conjunctor, $outer_conjunctor){ $haystack
= array(); foreach($data
as $value){ $haystack[] = ‘(‘
. $this->data_implode($value, $conjunctor) . ‘)‘; } return
implode($outer_conjunctor
. ‘ ‘, $haystack); } protected
function data_implode($data, $conjunctor, $outer_conjunctor
= null){ $wheres
= array(); foreach($data
as $key
=> $value){ if(($key
== ‘AND‘ || $key == ‘OR‘) && is_array($value)){ $wheres[] = 0 !== count(array_diff_key($value, array_keys(array_keys($value)))) ? ‘(‘
. $this->data_implode($value, ‘ ‘
. $key) . ‘)‘
: ‘(‘
. $this->inner_conjunct($value, ‘ ‘
. $key, $conjunctor) . ‘)‘; }else{ preg_match(‘/([\w\.]+)(\[(\>|\>\=|\<|\<\=|\!|\<\>)\])?/i‘, $key, $match); if(isset($match[3])){ if($match[3] == ‘‘){ $wheres[] = $this->column_quote($match[1]) . ‘ ‘
. $match[3] . ‘= ‘
. $this->quote($value); }else
if($match[3] == ‘!‘){ $column
= $this->column_quote($match[1]); switch(gettype($value)){ case
‘NULL‘: $wheres[] = $column
. ‘ IS NOT NULL‘; break; case
‘array‘: $wheres[] = $column
. ‘ NOT IN (‘
. $this->array_quote($value) . ‘)‘; break; case
‘integer‘: case
‘double‘: $wheres[] = $column
. ‘ != ‘ . $value; break; case
‘string‘: $wheres[] = $column
. ‘ != ‘ . $this->quote($value); break; } }else{ if($match[3] == ‘<>‘){ if(is_array($value)){ if(is_numeric($value[0]) && is_numeric($value[1])){ $wheres[] = $this->column_quote($match[1]) . ‘ BETWEEN ‘
. $value[0] . ‘ AND ‘
. $value[1]; }else{ $wheres[] = $this->column_quote($match[1]) . ‘ BETWEEN ‘
. $this->quote($value[0]) . ‘ AND ‘
. $this->quote($value[1]); } } }else{ if(is_numeric($value)){ $wheres[] = $this->column_quote($match[1]) . ‘ ‘
. $match[3] . ‘ ‘
. $value; }else{ $datetime
= strtotime($value); if($datetime){ $wheres[] = $this->column_quote($match[1]) . ‘ ‘
. $match[3] . ‘ ‘
. $this->quote(date(‘Y-m-d H:i:s‘, $datetime)); } } } } }else{ if(is_int($key)){ $wheres[] = $this->quote($value); }else{ $column
= $this->column_quote($match[1]); switch(gettype($value)){ case
‘NULL‘: $wheres[] = $column
. ‘ IS NULL‘; break; case
‘array‘: $wheres[] = $column
. ‘ IN (‘ . $this->array_quote($value) . ‘)‘; break; case
‘integer‘: case
‘double‘: $wheres[] = $column
. ‘ = ‘ . $value; break; case
‘string‘: $wheres[] = $column
. ‘ = ‘ . $this->quote($value); break; } } } } } return
implode($conjunctor
. ‘ ‘, $wheres); } public
function where_clause($where){ $where_clause
= ‘‘; if(is_array($where)){ $single_condition
= array_diff_key($where, array_flip( explode(‘ ‘, ‘AND OR GROUP ORDER HAVING LIMIT LIKE MATCH‘) )); if($single_condition
!= array()){ $where_clause
= ‘ WHERE ‘
. $this->data_implode($single_condition, ‘‘); } if(isset($where[‘AND‘])){ $where_clause
= ‘ WHERE ‘
. $this->data_implode($where[‘AND‘], ‘ AND‘); } if(isset($where[‘OR‘])){ $where_clause
= ‘ WHERE ‘
. $this->data_implode($where[‘OR‘], ‘ OR‘); } if(isset($where[‘LIKE‘])){ $like_query
= $where[‘LIKE‘]; if(is_array($like_query)){ $is_OR
= isset($like_query[‘OR‘]); if($is_OR
|| isset($like_query[‘AND‘])){ $connector
= $is_OR ? ‘OR‘ : ‘AND‘; $like_query
= $is_OR ? $like_query[‘OR‘] : $like_query[‘AND‘]; }else{ $connector
= ‘AND‘; } $clause_wrap
= array(); foreach($like_query
as $column => $keyword){ if(is_array($keyword)){ foreach($keyword
as $key){ $clause_wrap[] = $this->column_quote($column) . ‘ LIKE ‘
. $this->quote(‘%‘
. $key . ‘%‘); } }else{ $clause_wrap[] = $this->column_quote($column) . ‘ LIKE ‘
. $this->quote(‘%‘
. $keyword
. ‘%‘); } } $where_clause
.= ($where_clause
!= ‘‘ ? ‘ AND ‘ : ‘ WHERE ‘) . ‘(‘
. implode($clause_wrap, ‘ ‘
. $connector
. ‘ ‘) . ‘)‘; } } if(isset($where[‘MATCH‘])){ $match_query
= $where[‘MATCH‘]; if(is_array($match_query) && isset($match_query[‘columns‘]) && isset($match_query[‘keyword‘])){ $where_clause
.= ($where_clause
!= ‘‘ ? ‘ AND ‘ : ‘ WHERE ‘) . ‘ MATCH ("‘
. str_replace(‘.‘, ‘"."‘, implode($match_query[‘columns‘], ‘", "‘)) . ‘") AGAINST (‘
. $this->quote($match_query[‘keyword‘]) . ‘)‘; } } if(isset($where[‘GROUP‘])){ $where_clause
.= ‘ GROUP BY ‘
. $this->column_quote($where[‘GROUP‘]); } if(isset($where[‘ORDER‘])){ preg_match(‘/(^[a-zA-Z0-9_\-\.]*)(\s*(DESC|ASC))?/‘, $where[‘ORDER‘], $order_match); $where_clause
.= ‘ ORDER BY "‘
. str_replace(‘.‘, ‘"."‘, $order_match[1]) . ‘" ‘
. (isset($order_match[3]) ? $order_match[3] : ‘‘); if(isset($where[‘HAVING‘])){ $where_clause
.= ‘ HAVING ‘
. $this->data_implode($where[‘HAVING‘], ‘‘); } } if(isset($where[‘LIMIT‘])){ if(is_numeric($where[‘LIMIT‘])){ $where_clause
.= ‘ LIMIT ‘
. $where[‘LIMIT‘]; } if(is_array($where[‘LIMIT‘]) && is_numeric($where[‘LIMIT‘][0]) && is_numeric($where[‘LIMIT‘][1])){ $where_clause
.= ‘ LIMIT ‘
. $where[‘LIMIT‘][0] . ‘,‘
. $where[‘LIMIT‘][1]; } } }else{ if($where
!= null){ $where_clause
.= ‘ ‘ . $where; } } return
$where_clause; } public
function select($table, $join, $columns
= null, $where
= null){ $table
= ‘"‘ . $table . ‘"‘; $join_key
= is_array($join) ? array_keys($join) : null; if(strpos($join_key[0], ‘[‘) !== false){ $table_join
= array(); $join_array
= array( ‘>‘
=> ‘LEFT‘, ‘<‘
=> ‘RIGHT‘, ‘<>‘
=> ‘FULL‘, ‘><‘
=> ‘INNER‘ ); foreach($join
as $sub_table => $relation){ preg_match(‘/(\[(\<|\>|\>\<|\<\>)\])?([a-zA-Z0-9_\-]*)/‘, $sub_table, $match); if($match[2] != ‘‘
&& $match[3] != ‘‘){ if(is_string($relation)){ $relation
= ‘USING ("‘
. $relation
. ‘")‘; } if(is_array($relation)){ if(isset($relation[0])){ // For [‘column1‘, ‘column2‘] $relation
= ‘USING ("‘
. implode($relation, ‘", "‘) . ‘")‘; }else{ // For [‘column1‘ => ‘column2‘] $relation
= ‘ON ‘ . $table . ‘."‘ . key($relation) . ‘" = "‘
. $match[3] . ‘"."‘
. current($relation) . ‘"‘; } } $table_join[] = $join_array[ $match[2] ] . ‘ JOIN "‘
. $match[3] . ‘" ‘
. $relation; } } $table
.= ‘ ‘ . implode($table_join, ‘ ‘); }else{ $where
= $columns; $columns
= $join; } $query
= $this->query(‘SELECT ‘
. $this->column_push($columns) . ‘ FROM ‘
. $table . $this->where_clause($where)); return
is_string($query) ? $query
: ($query
? $query->fetchAll((is_string($columns) && $columns
!= ‘*‘) ? PDO::FETCH_COLUMN : PDO::FETCH_ASSOC) : false); } public
function _select($table, $join, $columns
= null, $where
= null){ $this->debug = true; echo
$this->select($table, $join, $columns, $where); } public
function insert($table, $datas){ $lastId
= array(); $query
= array(); // Check indexed or associative array if(!isset($datas[0])){ $datas
= array($datas); } foreach($datas
as $data){ $keys
= implode(‘", "‘, array_keys($data)); $values
= array(); foreach($data
as $key
=> $value){ switch(gettype($value)){ case
‘NULL‘: $values[] = ‘NULL‘; break; case
‘array‘: $values[] = $this->quote(serialize($value)); break; case
‘integer‘: case
‘double‘: case
‘string‘: $values[] = $this->quote($value); break; } } $exec
= $this->exec(‘INSERT INTO "‘
. $table . ‘" ("‘ . $keys . ‘") VALUES (‘
. implode($values, ‘, ‘) . ‘)‘); is_string($exec) ? $query[] = $exec
: $lastId[] = $this->pdo->lastInsertId(); } return
$query ? implode(‘; ‘, $query) : (count($lastId) > 1 ? $lastId
: $lastId[0]); } public
function _insert($table, $datas){ $this->debug = true; echo
$this->insert($table, $datas); } public
function update($table, $data, $where
= null){ $fields
= array(); foreach($data
as $key
=> $value){ if(is_array($value)){ $fields[] = $this->column_quote($key) . ‘=‘
. $this->quote(serialize($value)); }else{ preg_match(‘/([\w]+)(\[(\+|\-|\*|\/)\])?/i‘, $key, $match); if(isset($match[3])){ if(is_numeric($value)){ $fields[] = $this->column_quote($match[1]) . ‘ = ‘
. $this->column_quote($match[1]) . ‘ ‘
. $match[3] . ‘ ‘
. $value; } }else{ $column
= $this->column_quote($key); switch(gettype($value)){ case
‘NULL‘: $fields[] = $column
. ‘ = NULL‘; break; case
‘array‘: $fields[] = $column
. ‘ = ‘ . $this->quote(serialize($value)); break; case
‘integer‘: case
‘double‘: case
‘string‘: $fields[] = $column
. ‘ = ‘ . $this->quote($value); break; } } } } return
$this->exec(‘UPDATE "‘
. $table . ‘" SET ‘ . implode(‘, ‘, $fields) . $this->where_clause($where)); } public
function _update($table, $data, $where
= null){ $this->debug = true; echo
$this->update($table, $data, $where); } public
function delete($table, $where){ return
$this->exec(‘DELETE FROM "‘
. $table . ‘"‘ . $this->where_clause($where)); } public
function _delete($table, $where){ $this->debug = true; echo
$this->delete($table, $where); } public
function replace($table, $columns, $search
= null, $replace
= null, $where
= null){ if(is_array($columns)){ $replace_query
= array(); foreach($columns
as $column => $replacements){ foreach($replacements
as $replace_search => $replace_replacement){ $replace_query[] = $column
. ‘ = REPLACE("‘
. $column
. ‘", ‘ . $this->quote($replace_search) . ‘, ‘
. $this->quote($replace_replacement) . ‘)‘; } } $replace_query
= implode(‘, ‘, $replace_query); $where
= $search; }else{ if(is_array($search)){ $replace_query
= array(); foreach($search
as $replace_search => $replace_replacement){ $replace_query[] = $columns
. ‘ = REPLACE("‘
. $columns
. ‘", ‘ . $this->quote($replace_search) . ‘, ‘
. $this->quote($replace_replacement) . ‘)‘; } $replace_query
= implode(‘, ‘, $replace_query); $where
= $replace; }else{ $replace_query
= $columns
. ‘ = REPLACE("‘
. $columns
. ‘", ‘ . $this->quote($search) . ‘, ‘
. $this->quote($replace) . ‘)‘; } } return
$this->exec(‘UPDATE "‘
. $table . ‘" SET ‘ . $replace_query
. $this->where_clause($where)); } public
function _replace($table, $columns, $search
= null, $replace
= null, $where
= null){ $this->debug = true; echo
$this->replace($table, $columns, $search, $replace, $where); } public
function get($table, $columns, $where
= null){ if(!isset($where)){ $where
= array(); } $where[‘LIMIT‘] = 1; $data
= $this->select($table, $columns, $where); return
is_string($data) ? $data
: (isset($data[0]) ? $data[0] : false); } public
function _get($table, $columns, $where
= null){ $this->debug = true; echo
$this->get($table, $columns, $where); } public
function has($table, $where){ $query
= $this->query(‘SELECT EXISTS(SELECT 1 FROM "‘
. $table . ‘"‘ . $this->where_clause($where) . ‘)‘); return
is_string($query) ? $query
: $query->fetchColumn() === ‘1‘; } public
function _has($table, $where){ $this->debug = true; echo
$this->has($table, $where); } public
function count($table, $where
= null){ $query
= $this->query(‘SELECT COUNT(*) FROM "‘
. $table . ‘"‘ . $this->where_clause($where)); return
is_string($query) ? $query
: 0 + ($query->fetchColumn()); } public
function _count($table, $where
= null){ $this->debug = true; echo
$this->count($table, $where); } public
function max($table, $column, $where
= null){ $query
= $this->query(‘SELECT MAX("‘
. $column
. ‘") FROM "‘
. $table . ‘"‘ . $this->where_clause($where)); return
is_string($query) ? $query
: 0 + ($query->fetchColumn()); } public
function _max($table, $column, $where
= null){ $this->debug = true; echo
$this->max($table, $column, $where); } public
function min($table, $column, $where
= null){ $query
= $this->query(‘SELECT MIN("‘
. $column
. ‘") FROM "‘
. $table . ‘"‘ . $this->where_clause($where)); return
is_string($query) ? $query
: 0 + ($query->fetchColumn()); } public
function _min($table, $column, $where
= null){ $this->debug = true; echo
$this->min($table, $column, $where); } public
function avg($table, $column, $where
= null){ $query
= $this->query(‘SELECT AVG("‘
. $column
. ‘") FROM "‘
. $table . ‘"‘ . $this->where_clause($where)); return
is_string($query) ? $query
: 0 + ($query->fetchColumn()); } public
function _avg($table, $column, $where
= null){ $this->debug = true; echo
$this->avg($table, $column, $where); } public
function sum($table, $column, $where
= null){ $query
= $this->query(‘SELECT SUM("‘
. $column
. ‘") FROM "‘
. $table . ‘"‘ . $this->where_clause($where)); return
is_string($query) ? $query
: 0 + ($query->fetchColumn()); } public
function _sum($table, $column, $where
= null){ $this->debug = true; echo
$this->sum($table, $column, $where); } public
function error(){ return
$this->pdo->errorInfo(); } public
function last_query(){ return
$this->queryString; } public
function info(){ return
array( ‘server‘
=> $this->pdo->getAttribute(PDO::ATTR_SERVER_INFO), ‘client‘
=> $this->pdo->getAttribute(PDO::ATTR_CLIENT_VERSION), ‘driver‘
=> $this->pdo->getAttribute(PDO::ATTR_DRIVER_NAME), ‘version‘
=> $this->pdo->getAttribute(PDO::ATTR_SERVER_VERSION), ‘connection‘
=> $this->pdo->getAttribute(PDO::ATTR_CONNECTION_STATUS) ); }}?> |
原文：http://www.cnblogs.com/hooray/p/3559286.html