ecshop 2.7.3 向上兼容至php7

首先将includes下的cls_mysql.php重命名为cls_mysqli.php。然后打开，将类名修改为cls_mysqli。修改构造方法。

将与类名相同的方法名全部改为__construct，如果有__construct构造方法，删去。总之只有一个__construct构造方法。以下简称修改构造方法。

参考:http://php.net/manual/zh/language.oop5.decon.php
将cls_mysqli.php里面的mysql_全部替换为mysqli_，区分大小写。
将所有依赖于cls_mysql.php的文件全部修改了。

admin/includes/init.php
api/init.php
api/client/includes/init.php
includes/init.php
includes/fckeditor/editor/filemanager/connectors/php/config.php
mobile/init.php
wap/init.php

搜索以下三种方法，这三种方法的参数第一个都是mysql资源id，而，mysql_的这三种方法最后一个参数是mysql资源id，所以要一个一个改了。还好工程量不大。注意，mysqli_connect方法最后要加$dbname参数。
mysqli_connect
mysqli_query
mysqli_select_db

修改下列文件的构造方法

/api
 uc.php:uc_note
/admin/includes
 cls_exchange.php:exchange
 cls_google_sitemap.php:google_sitemap_item
 cls_sql_dump.php:cls_sql_dump
/includes
 cls_captcha.php:captcha
 cls_ecshop.php:ECS
 cls_error.php:ecs_error
 cls_iconv.php:Chinese
 cls_image.php:cls_image
 cls_mysql.php:cls_mysql
 cls_rss.php:RSS_Base;RSS_Builder;RSSItem
 cls_session.php:cls_session
 cls_sms.php:sms
 cls_smtp.php:smtp
 cls_sql_executor.php:sql_executor
 cls_template.php:cls_template
 cls_transport.php:transport
/includes/fckeditor
 fckeditor_php4.php:FCKeditor
/includes/modules/convert
 shopex46.php:shopex46
 shopex47.php:shopex47
 shopex48.php:shopex48
/includes/modules/integrates
 discuz55.php:discuz55
 dvbbs.php:dvbbs
 ecshop.php:ecshop
 integrate.php:intergrate
 phpbb.php:phpbb
 phpwind6.php:phpwind6
 ucenter.php:ucenter
 vbb.php:vbb
/includes/modules/payment
 alipay.php:alipay
 balance.php:balance
 bank.php:bank
 cappay.php
 chinabank.php
 cod.php
 ips.php
 kuaiqian.php
 paypal.php
 paypal_ec.php
 post.php
 shenzhou.php
 tenpay.php
 tenpayc2c.php
 upop.php
/includes/modules/shipping
 cac.php
 city_express.php
 ems.php
 flat.php
 fpd.php
 post_express.php
 post_mail.php
 presswork.php
 sf_express.php
 sto_expres.php
 yto.php
 zto.php

修改includes/lib_base.php

function gd_version()
{
    include_once(ROOT_PATH . 'includes/cls_image.php');
    $gd = new cls_image;
    return $gd->gd_version();
}

接下来修改includes/cls_template.php，将所有/e模式的preg_replace全部换为preg_replace_callback

<?php
function fetch_str($source) //line 300
    //return preg_replace("/{([^\}\{\n]*)}/e", "\$this->select('\\1');", $source);
    return preg_replace_callback("/{([^\}\{\n]*)}/", 'self::select', $source);

function select($tag) //line 370
    //$tag = stripslashes(trim($tag));
    $tag = stripslashes(trim($tag[1]));
    //line 493
    //$out = "<?php \n" . '$k = ' . preg_replace("/(\'\\$[^,]+)/e" , "stripslashes(trim('\\1','\''));", var_export($t, true)) . ";\n";
    $out = "<?php \n" . '$k = ' . preg_replace_callback("/(\'\\$[^,]+)/" , function($m){return stripslashes(trim($m[1],'\''));}, var_export($t, true)) . ";\n";

function get_val($val) //line 552
    //$val = preg_replace("/\[([^\[\]]*)\]/eis", "'.'.str_replace('$','\$','\\1')", $val);
    $val = preg_replace_callback("/\[([^\[\]]*)\]/is", function($m){return '.'.str_replace('$','$',$m[1]);}, $val);//或者下面这种形式
    $val = preg_replace_callback("/\[([^\[\]]*)\]/is", function($m){return '.'.$m[1];}, $val);

function smarty_prefilter_preCompile($source) //line 1069-1071
    /*
    $pattern     = '/<!--\s#BeginLibraryItem\s\"\/(.*?)\"\s-->.*?<!--\s#EndLibraryItem\s-->/se';
    $replacement = "'{include file='.strtolower('\\1'). '}'";
    $source      = preg_replace($pattern, $replacement, $source);
    */
    $pattern     = '/<!--\s#BeginLibraryItem\s\"\/(.*?)\"\s-->.*?<!--\s#EndLibraryItem\s-->/s';
    //$replacement = "'{include file='.strtolower('\\1'). '}'"; //这行用不着咯，当然要注释掉
    $val = preg_replace_callback("/\[([^\[\]]*)\]/is", function($m){return '.'.$m[1];}, $val);

然后是includes/lib_debug.php

function pre( $string, $return_mode = false, $tabwidth = 3 ) //line 580
    $string = preg_replace('/\t+/em', "str_repeat( ' ', strlen('\\0') * $tabwidth );", $string);
    //$string = preg_replace_callback('/\t+/m', function($m){global $tabwidth;return str_repeat( ' ', strlen($m[0]) * $tabwidth );}, $string);

最后是/admin/template.php

//line 763
//$pattern = '/(?:<!--\\s*TemplateBeginEditable\\sname="('. implode('|',array_keys($regions)) .')"\\s*-->)(?:.*?)(?:<!--\\s*TemplateEndEditable\\s*-->)/se';
$pattern = '/(?:<!--\\s*TemplateBeginEditable\\sname="('. implode('|',array_keys($regions)) .')"\\s*-->)(?:.*?)(?:<!--\\s*TemplateEndEditable\\s*-->)/s';
//$template_content = preg_replace($pattern, "'<!-- TemplateBeginEditable name=\"\\1\" -->\r\n' . \$regions['\\1'] . '\r\n<!-- TemplateEndEditable -->';", $template_content);
$template_content = preg_replace_callback($pattern, function($m){return '<!-- TemplateBeginEditable name="' . $m[1] . '" -->' . "\r\n" . $regions["'$m[1]'"] . "\r\n<!-- TemplateEndEditable -->";}, $template_content);

将下列文件的mktime()换成time()

admin/cloud.php
admin/shop_config.php
admin/sms_url.php<br>

将下列文件end()方法中嵌套调用的全部分解开来写

admin/flashpay.php
admin/shipping.php
admin/topic.php
includes/lib_main.php

将下列文件array_shift()方法中嵌套调用的全部分解开来写

includes/cls_template.php

将admin/sitemap.php内 & new 全部改为 new
将下列文件中的静态调用全部修改了

admin/article.php
admin/database.php
admin/picture_batch.php
admin/includes/cls_sql_dump.php

冒着被打骚扰的危险注册了云起帐号，下载了ecshop3.0，发现，除了主题好看了点，添加了过滤之外，其他都然并卵。。。云服务多多少少还是有点用处的
不过，里面几个补丁合适可以参考参考的

//includes_admin_template_restore_backup.php
$template = $this;
return preg_replace_callback("/{([^\}\{\n]*)}/", function($r) use(&$template){return $template->select($r[1]);}, $source);

//includes_cls_template_fetch_str.php
$template = $this;
return preg_replace_callback("/{([^\}\{\n]*)}/", function($r) use(&$template){return $template->select($r[1]);}, $source);

//includes_cls_template_get_val.php
$val = preg_replace_callback("/\[([^\[\]]*)\]/is", function($r){return '.' . $r[1];}, $val);

//includes_cls_template_select.php
$out = "<?php \n" . '$k = ' . preg_replace_callback("/(\'\\$[^,]+)/", function($r){return stripcslashes(trim($r[1], '\''));}, var_export($t, true)) . ";\n";

//includes_cls_template_smarty_prefilter_preCompile.php
$pattern     = '/<!--\s#BeginLibraryItem\s\"\/(.*?)\"\s-->.*?<!--\s#EndLibraryItem\s-->/s';
$source      = preg_replace_callback($pattern, function($r){return '{include file=' . strtolower($r[1]). '}';}, $source);

//includes_lib.debug_pre.php
$string = preg_replace_callback('/\t+/m', function($r) use($tabwidth){return str_repeat(' ', strlen($r[0]) * $tabwidth);}, $string); //至少比我那global优雅多了

万事大吉，高版本php全都可以运行了。有问题请留言。有错误请指教。