ecshop修改php的方法：首先将mysql扩展的使用替换掉，改为使用mysqli或pdo；然后更改“cls_image.php”的“gd_version()”方法，将这个方法改为静态方法；最后去除使用类名的构造函数。
ecshop支持php7的修改方法
（1）将mysql扩展的使用替换掉，改为使用mysqli或pdo（推荐使用mysqli）：
推荐：《ecshop教程》
从php5.5开始，mysql扩展将废弃了。 具体更改的文件在于includes/cls_mysql.php。这是个不小的工程，文件代码太长……
if (!defined('ditan_ecs')){die('hacking attempt');}class cls_mysql{var $link_id = null;var $settings = array();var $querycount = 0;var $querytime = '';var $querylog = array();var $max_cache_time = 300; // 最大的缓存时间，以秒为单位var $cache_data_dir = 'temp/query_caches/';var $root_path = '';var $error_message = array();var $platform = '';var $version = '';var $dbhash = '';var $starttime = 0;var $timeline = 0;var $timezone = 0;// 事务指令数protected $transtimes = 0;var $mysql_config_cache_file_time = 0;var $mysql_disable_cache_tables = array(); // 不允许被缓存的表，遇到将不会进行缓存function __construct($dbhost, $dbuser, $dbpw, $dbname = '', $charset = 'gbk', $pconnect = 0, $quiet = 0){$this->cls_mysql($dbhost, $dbuser, $dbpw, $dbname, $charset, $pconnect, $quiet);}function cls_mysql($dbhost, $dbuser, $dbpw, $dbname = '', $charset = 'gbk', $pconnect = 0, $quiet = 0){if (defined('ec_charset')){$charset = strtolower(str_replace('-', '', ec_charset));}if (defined('root_path') && !$this->root_path){$this->root_path = root_path;}if ($quiet){$this->connect($dbhost, $dbuser, $dbpw, $dbname, $charset, $pconnect, $quiet);}else{$this->settings = array('dbhost' => $dbhost,'dbuser' => $dbuser,'dbpw' => $dbpw,'dbname' => $dbname,'charset' => $charset,'pconnect' => $pconnect);}}function connect($dbhost, $dbuser, $dbpw, $dbname = '', $charset = 'utf8', $pconnect = 0, $quiet = 0){if ($pconnect){$this->link_id = new mysqli('p:'.$dbhost, $dbuser, $dbpw);if ($this->link_id->connect_error){if (!$quiet){$this->errormsg("can't pconnect mysql server($dbhost)!");}return false;}}else{$this->link_id = new mysqli($dbhost, $dbuser, $dbpw);if ($this->link_id->connect_error){if (!$quiet){$this->errormsg("can't connect mysql server($dbhost)!");}return false;}}$this->dbhash = md5($this->root_path . $dbhost . $dbuser . $dbpw . $dbname);$this->version = $this->link_id->server_version;/* 对字符集进行初始化 */$this->link_id->set_charset($charset);$this->link_id->query("set sql_mode=''");$sqlcache_config_file = $this->root_path . $this->cache_data_dir . 'sqlcache_config_file_' . $this->dbhash . '.php';@include($sqlcache_config_file);$this->starttime = time();if ($this->max_cache_time && $this->starttime > $this->mysql_config_cache_file_time + $this->max_cache_time){if ($dbhost != '.'){$result = $this->link_id->query("show variables like 'basedir'");$row = $result->fetch_array(mysqli_assoc);$result->free();if (!empty($row['value']{1}) && $row['value']{1} == ':' && !empty($row['value']{2}) && $row['value']{2} == "/"){$this->platform = 'windows';}else{$this->platform = 'other';}}else{$this->platform = 'windows';}if ($this->platform == 'other' &&($dbhost != '.' && strtolower($dbhost) != 'localhost:3306' && $dbhost != '127.0.0.1:3306') ||date_default_timezone_get() == 'utc'){$result = $this->link_id->query("select unix_timestamp() as timeline, unix_timestamp('" . date('y-m-d h:i:s', $this->starttime) . "') as timezone");$row = $result->fetch_array(mysqli_assoc);$result->free();if ($dbhost != '.' && strtolower($dbhost) != 'localhost:3306' && $dbhost != '127.0.0.1:3306'){$this->timeline = $this->starttime - $row['timeline'];}if (date_default_timezone_get() == 'utc'){$this->timezone = $this->starttime - $row['timezone'];}}$content = '<' . "?php\r\n" .'$this->mysql_config_cache_file_time = ' . $this->starttime . ";\r\n" .'$this->timeline = ' . $this->timeline . ";\r\n" .'$this->timezone = ' . $this->timezone . ";\r\n" .'$this->platform = ' . "'" . $this->platform . "';\r\n?" . '>';@file_put_contents($sqlcache_config_file, $content);}/* 选择数据库 */if ($dbname){if ($this->link_id->select_db($dbname) === false ){if (!$quiet){$this->errormsg("can't select mysql database($dbname)!");}return false;}else{return true;}}else{return true;}}function select_database($dbname){return $this->link_id->select_db($dbname);}function set_mysql_charset($charset){if (in_array(strtolower($charset), array('gbk', 'big5', 'utf-8', 'utf8'))){$charset = str_replace('-', '', $charset);}$this->link_id->set_charset($charset);}function fetch_array($query, $result_type = mysqli_assoc){$row = $query->fetch_array($result_type);$query->free();return $row;}function query($sql, $type = ''){if ($this->link_id === null){$this->connect($this->settings['dbhost'], $this->settings['dbuser'], $this->settings['dbpw'], $this->settings['dbname'], $this->settings['charset'], $this->settings['pconnect']);$this->settings = array();}if ($this->querycount++ <= 99){$this->querylog[] = $sql;}if ($this->querytime == ''){if (php_version >= '5.0.0'){$this->querytime = microtime(true);}else{$this->querytime = microtime();}}/* 当当前的时间大于类初始化时间的时候，自动执行 ping 这个自动重新连接操作 */if (time() > $this->starttime + 1){$this->link_id->ping();}if (!($query = $this->link_id->query($sql)) && $type != 'silent'){$this->error_message[]['message'] = 'mysql query error';$this->error_message[]['sql'] = $sql;$this->error_message[]['error'] = $this->link_id->error;$this->error_message[]['errno'] = $this->link_id->errno;$this->errormsg();return false;}if (defined('debug_mode') && (debug_mode & 8) == 8){$logfilename = $this->root_path . data_dir . '/mysql_query_' . $this->dbhash . '_' . date('y_m_d') . '.log';$str = $sql . "\n\n";if (php_version >= '5.0'){file_put_contents($logfilename, $str, file_append);}else{$fp = @fopen($logfilename, 'ab+');if ($fp){fwrite($fp, $str);fclose($fp);}}}return $query;}function affected_rows(){return $this->link_id->affected_rows;}function error(){return $this->link_id->error;}function errno(){return $this->link_id->errno;}function result($query, $row){$query->data_seek($row);$result = $query->fetch_row();$query->free();return $result;}function num_rows($query){return $query->num_rows;}function num_fields($query){return $this->link_id->field_count;}function free_result($query){return $query->free();}function insert_id(){return $this->link_id->insert_id;}function fetchrow($query){return $query->fetch_assoc();}function fetch_fields($query){return $query->fetch_field();}function version(){return $this->version;}function ping(){return $this->link_id->ping();}function escape_string($unescaped_string){return $this->link_id->real_escape_string($unescaped_string);}function close(){return $this->link_id->close();}function errormsg($message = '', $sql = ''){if ($message){echo "dtxb info: $message\n\n";//print('http://faq.comsenz.com/');}else{echo "mysql server error report:";print_r($this->error_message);//echo "http://faq.comsenz.com/";}exit;}/* 仿真 adodb 函数 */function selectlimit($sql, $num, $start = 0){if ($start == 0){$sql .= ' limit ' . $num;}else{$sql .= ' limit ' . $start . ', ' . $num;}return $this->query($sql);}function getone($sql, $limited = false){if ($limited == true){$sql = trim($sql . ' limit 1');}$res = $this->query($sql);if ($res !== false){$row = $res->fetch_row();$res->free();if ($row !== false){return $row[0];}else{return '';}}else{return false;}}function getonecached($sql, $cached = 'filefirst'){$sql = trim($sql . ' limit 1');$cachefirst = ($cached == 'filefirst' || ($cached == 'mysqlfirst' && $this->platform != 'windows')) && $this->max_cache_time;if (!$cachefirst){return $this->getone($sql, true);}else{$result = $this->getsqlcachedata($sql, $cached);if (empty($result['storecache']) == true){return $result['data'];}}$arr = $this->getone($sql, true);if ($arr !== false && $cachefirst){$this->setsqlcachedata($result, $arr);}return $arr;}function getall($sql){$res = $this->query($sql);if ($res !== false){$arr = $res->fetch_all(mysqli_assoc);$res->free();return $arr;}else{return false;}}function getallcached($sql, $cached = 'filefirst'){$cachefirst = ($cached == 'filefirst' || ($cached == 'mysqlfirst' && $this->platform != 'windows')) && $this->max_cache_time;if (!$cachefirst){return $this->getall($sql);}else{$result = $this->getsqlcachedata($sql, $cached);if (empty($result['storecache']) == true){return $result['data'];}}$arr = $this->getall($sql);if ($arr !== false && $cachefirst){$this->setsqlcachedata($result, $arr);}return $arr;}function getrow($sql, $limited = false){if ($limited == true){$sql = trim($sql . ' limit 1');}$res = $this->query($sql);if ($res !== false){$result = $res->fetch_assoc();$res->free();return $result;}else{return false;}}function getrowcached($sql, $cached = 'filefirst'){$cachefirst = ($cached == 'filefirst' || ($cached == 'mysqlfirst' && $this->platform != 'windows')) && $this->max_cache_time;if (!$cachefirst){return $this->getrow($sql, true);}else{$result = $this->getsqlcachedata($sql, $cached);if (empty($result['storecache']) == true){return $result['data'];}}$arr = $this->getrow($sql, true);if ($arr !== false && $cachefirst){$this->setsqlcachedata($result, $arr);}return $arr;}function getcol($sql){$res = $this->query($sql);if ($res !== false){$arr = array();while ($row = $res->fetch_row()){$arr[] = $row[0];}$res->free();return $arr;}else{return false;}}function getcolcached($sql, $cached = 'filefirst'){$cachefirst = ($cached == 'filefirst' || ($cached == 'mysqlfirst' && $this->platform != 'windows')) && $this->max_cache_time;if (!$cachefirst){return $this->getcol($sql);}else{$result = $this->getsqlcachedata($sql, $cached);if (empty($result['storecache']) == true){return $result['data'];}}$arr = $this->getcol($sql);if ($arr !== false && $cachefirst){$this->setsqlcachedata($result, $arr);}return $arr;}function autoexecute($table, $field_values, $mode = 'insert', $where = '', $querymode = ''){$field_names = $this->getcol('desc ' . $table);$sql = '';if ($mode == 'insert'){$fields = $values = array();foreach ($field_names as $value){if (array_key_exists($value, $field_values) == true){$fields[] = $value;$values[] = "'" . $field_values[$value] . "'";}}if (!empty($fields)){$sql = 'insert into ' . $table . ' (' . implode(', ', $fields) . ') values (' . implode(', ', $values) . ')';}}else{$sets = array();foreach ($field_names as $value){if (array_key_exists($value, $field_values) == true){$sets[] = $value . " = '" . $field_values[$value] . "'";}}if (!empty($sets)){$sql = 'update ' . $table . ' set ' . implode(', ', $sets) . ' where ' . $where;}}if ($sql){return $this->query($sql, $querymode);}else{return false;}}function autoreplace($table, $field_values, $update_values, $where = '', $querymode = ''){$field_descs = $this->getall('desc ' . $table);$primary_keys = array();foreach ($field_descs as $value){$field_names[] = $value['field'];if ($value['key'] == 'pri'){$primary_keys[] = $value['field'];}}$fields = $values = array();foreach ($field_names as $value){if (array_key_exists($value, $field_values) == true){$fields[] = $value;$values[] = "'" . $field_values[$value] . "'";}}$sets = array();foreach ($update_values as $key => $value){if (array_key_exists($key, $field_values) == true){if (is_int($value) || is_float($value)){$sets[] = $key . ' = ' . $key . ' + ' . $value;}else{$sets[] = $key . " = '" . $value . "'";}}}$sql = '';if (empty($primary_keys)){if (!empty($fields)){$sql = 'insert into ' . $table . ' (' . implode(', ', $fields) . ') values (' . implode(', ', $values) . ')';}}else{if ($this->version() >= '4.1'){if (!empty($fields)){$sql = 'insert into ' . $table . ' (' . implode(', ', $fields) . ') values (' . implode(', ', $values) . ')';if (!empty($sets)){$sql .= 'on duplicate key update ' . implode(', ', $sets);}}}else{if (empty($where)){$where = array();foreach ($primary_keys as $value){if (is_numeric($value)){$where[] = $value . ' = ' . $field_values[$value];}else{$where[] = $value . " = '" . $field_values[$value] . "'";}}$where = implode(' and ', $where);}if ($where && (!empty($sets) || !empty($fields))){if (intval($this->getone("select count(*) from $table where $where")) > 0){if (!empty($sets)){$sql = 'update ' . $table . ' set ' . implode(', ', $sets) . ' where ' . $where;}}else{if (!empty($fields)){$sql = 'replace into ' . $table . ' (' . implode(', ', $fields) . ') values (' . implode(', ', $values) . ')';}}}}}if ($sql){return $this->query($sql, $querymode);}else{return false;}}function setmaxcachetime($second){$this->max_cache_time = $second;}function getmaxcachetime(){return $this->max_cache_time;}function getsqlcachedata($sql, $cached = ''){$sql = trim($sql);$result = array();$result['filename'] = $this->root_path . $this->cache_data_dir . 'sqlcache_' . abs(crc32($this->dbhash . $sql)) . '_' . md5($this->dbhash . $sql) . '.php';$data = @file_get_contents($result['filename']);if (isset($data{23})){$filetime = substr($data, 13, 10);$data = substr($data, 23);if (($cached == 'filefirst' && time() > $filetime + $this->max_cache_time) || ($cached == 'mysqlfirst' && $this->table_lastupdate($this->get_table_name($sql)) > $filetime)){$result['storecache'] = true;}else{$result['data'] = @unserialize($data);if ($result['data'] === false){$result['storecache'] = true;}else{$result['storecache'] = false;}}}else{$result['storecache'] = true;}return $result;}function setsqlcachedata($result, $data){if ($result['storecache'] === true && $result['filename']){@file_put_contents($result['filename'], '' . time() . serialize($data));clearstatcache();}}/* 获取 sql 语句中最后更新的表的时间，有多个表的情况下，返回最新的表的时间 */function table_lastupdate($tables){if ($this->link_id === null){$this->connect($this->settings['dbhost'], $this->settings['dbuser'], $this->settings['dbpw'], $this->settings['dbname'], $this->settings['charset'], $this->settings['pconnect']);$this->settings = array();}$lastupdatetime = '0000-00-00 00:00:00';$tables = str_replace('`', '', $tables);$this->mysql_disable_cache_tables = str_replace('`', '', $this->mysql_disable_cache_tables);foreach ($tables as $table){if (in_array($table, $this->mysql_disable_cache_tables) == true){$lastupdatetime = '2037-12-31 23:59:59';break;}if (strstr($table, '.') != null){$tmp = explode('.', $table);$sql = 'show table status from `' . trim($tmp[0]) . "` like '" . trim($tmp[1]) . "'";}else{$sql = "show table status like '" . trim($table) . "'";}$result = $this->link_id->query($sql);$row = $result->fetch_assoc();if ($row['update_time'] > $lastupdatetime){$lastupdatetime = $row['update_time'];}}$lastupdatetime = strtotime($lastupdatetime) - $this->timezone + $this->timeline;return $lastupdatetime;}function get_table_name($query_item){$query_item = trim($query_item);$table_names = array();/* 判断语句中是不是含有 join */if (stristr($query_item, ' join ') == ''){/* 解析一般的 select from 语句 */if (preg_match('/^select.*?from\s*((?:`?\w+`?\s*\.\s*)?`?\w+`?(?:(?:\s*as)?\s*`?\w+`?)?(?:\s*,\s*(?:`?\w+`?\s*\.\s*)?`?\w+`?(?:(?:\s*as)?\s*`?\w+`?)?)*)/is', $query_item, $table_names)){$table_names = preg_replace('/((?:`?\w+`?\s*\.\s*)?`?\w+`?)[^,]*/', '\1', $table_names[1]);return preg_split('/\s*,\s*/', $table_names);}}else{/* 对含有 join 的语句进行解析 */if (preg_match('/^select.*?from\s*((?:`?\w+`?\s*\.\s*)?`?\w+`?)(?:(?:\s*as)?\s*`?\w+`?)?.*?join.*$/is', $query_item, $table_names)){$other_table_names = array();preg_match_all('/join\s*((?:`?\w+`?\s*\.\s*)?`?\w+`?)\s*/i', $query_item, $other_table_names);return array_merge(array($table_names[1]), $other_table_names[1]);}}return $table_names;}/* 设置不允许进行缓存的表 */function set_disable_cache_tables($tables){if (!is_array($tables)){$tables = explode(',', $tables);}foreach ($tables as $table){$this->mysql_disable_cache_tables[] = $table;}array_unique($this->mysql_disable_cache_tables);}/**+----------------------------------------------------------* 启动事务+----------------------------------------------------------* @access public+----------------------------------------------------------* @return void+----------------------------------------------------------*/public function starttrans() {//$this->initconnect(true);if ( !$this->link_id ) return false;//数据rollback 支持if ($this->transtimes == 0) {$this->link_id->autocommit(false);}$this->transtimes++;return ;}/**+----------------------------------------------------------* 用于非自动提交状态下面的查询提交+----------------------------------------------------------* @access public+----------------------------------------------------------* @return boolen+----------------------------------------------------------*/public function commit(){if ($this->transtimes > 0) {$result = $this->link_id->commit();$this->transtimes = 0;if(!$result){$this->error_message[]['message'] = 'mysql query error';$this->error_message[]['sql'] = $sql;$this->error_message[]['error'] = $this->link_id->error;$this->error_message[]['errno'] = $this->link_id->errno;$this->errormsg();return false;}}return true;}/**+----------------------------------------------------------* 事务回滚+----------------------------------------------------------* @access public+----------------------------------------------------------* @return boolen+----------------------------------------------------------*/public function rollback(){if ($this->transtimes > 0) {$result = $this->link_id->rollback();$this->transtimes = 0;if(!$result){$this->error_message[]['message'] = 'mysql query error';$this->error_message[]['sql'] = $sql;$this->error_message[]['error'] = $this->link_id->error;$this->error_message[]['errno'] = $this->link_id->errno;$this->errormsg();return false;}}return true;}}
代码当中加了几个方法，用于支持事务。
（2）更改cls_image.php的gd_version()方法，将这个方法改为静态方法，并且所有调用此方法的地方，都改为静态调用。
php5.6开始，已经不支持不兼容的上下文调用方法，并且产生 e_deprecated 错误（以前是 e_strict）。
更改如下：
includes/cls_images.php，(gd_version方法体添加static关键字）/*** 获得服务器上的 gd 版本** @access public* @return int 可能的值为0，1，2*/static function gd_version(){....}
在好几处调用此方法的地方都改为静态调用，比如includes/cls_images.php的好几个方法在调用时使用类对象调用：
function make_thumb($img, $thumb_width = 0, $thumb_height = 0, $path = '', $bgcolor=''){$gd = $this->gd_version(); //获取 gd 版本。0 表示没有 gd 库，1 表示 gd 1.x，2 表示 gd 2.x。。。}
将其改为：
function make_thumb($img, $thumb_width = 0, $thumb_height = 0, $path = '', $bgcolor=''){$gd = self::gd_version(); //获取 gd 版本。0 表示没有 gd 库，1 表示 gd 1.x，2 表示 gd 2.x。。。}
还有includes/lib_base.php文件的gd_version函数，改为：
function gd_version(){include_once(root_path . 'includes/cls_image.php');return cls_image::gd_version();}
其他文件代码在调用时，最好改为调用lib_base文件的gd_version的函数。可以搜索更改。
（3）更改includes/lib_main.php文件的get_dyna_libs函数，该第一行的代码：
function get_dyna_libs($theme, $tmp){$ext = end(explode('.', $tmp));。。。}
更改为：
function get_dyna_libs($theme, $tmp){$tmp_ext = explode('.', $tmp);$ext = end($tmp_ext);}
end方法的接受的参数必须是引用传递值，这里使用了explode方法返回值，不可以直接套用。
（4）includes/cls_template.php代码：
preg_replace方法，自php5.5开始 /e修饰符已经废弃，所以要使用preg_replace_callback代替。此代替有多处:
fetch_str方法：
fetch_str($source){。。。return preg_replace_callback("/{([^\}\{\n]*)}/",'self::select_replace', $source);}//新增的方法private function select_replace($matches){return $this->select($matches[1]);}
select方法：
function select($tag){。。。$pregreplace = preg_replace_callback("/(\'\\$[^,]+)/" , function($matches){return stripslashes(trim($matches[1],'\''));}, var_export($t, true));。。。}smarty_prefilter_precompile方法：$source = preg_replace_callback($pattern, function($matches){return '{include file='.strtolower($matches[1]). '}';}, $source);
（5）将所有类的构造函数，都去除使用类名的构造函数，保留__construct()：
涉及此改动的超多，用搜索一一找到并改动吧……这个就不列举了。
以上就是ecshop如何修改并支持php7的详细内容。