下面是我的MySQL配置文件.我试图了解它是如何工作的.有什么意义[mysqld_safe]？还没有[mysqld]启动MySQL？为什么之后的日志错误和pid文件设置呢？
[mysqld]
# Settings user and group are ignored when systemd is used (fedora >= 15).
# If you need to run mysqld under different user or group,
# customize your systemd unit file for mysqld according to the
# instructions in http://fedoraproject.org/wiki/Systemd
user=mysql
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# Semisynchronous Replication
# http://dev.mysql.com/doc/refman/5.5/en/replication-semisync.html
# uncomment next line on MASTER
;plugin-load=rpl_semi_sync_master=semisync_master.so
# uncomment next line on SLAVE
;plugin-load=rpl_semi_sync_slave=semisync_slave.so …我正在开发一个应用程序，其中我有一个名为repswho has many dealersfrom dealerstable 的表，然后又一个dealer有很多subdealers来自subdealers表的表 - 我有一个名为的外键，dealer_id我可以从中找到它subdealers，但问题是我dealers在一个可能会增加或减少的数组中取决于rep它们所属的
这就是我想要实现的目标，但无处可去
foreach ($dealers as $dealer) {
$subdealers = DB::table('subdealers')->where('dealer_id', '=', $dealer->id);
}
然后迭代$subdealers得到值
但我知道这是不可能的，因为我正在做的就是将UNION所有结果放入一个数组中，然后在 Blade 中迭代它们
这怎么可能？
我有不同的php变量包含我想要放在mysql数据库中的一个表中的数据.问题是我需要将内容放在特定的格式中,以便链接到数据库的另一个也可以使用它.我不知道这是什么类型的格式.它看起来不像JSON
a:1:{i:0;s:27:"my@example.com";}
a:17:{i:0;a:7:{s:2:"id";s:1:"1";s:4:"slug";s:19:"contact-information";s:4:"name";s:19:"Contact Information";s:4:"type";s:8:"fieldset";s:7:"options";s:0:"";s:9:"parent_id";s:1:"0";s:5:"value";s:0:"";}i:1;a:7:{s:2:"id";s:1:"6";s:4:"slug";s:12:"company-name";s:4:"name";s:12:"Company Name";s:4:"type";s:4:"text";s:7:"options";s:0:"";s:9:"parent_id";s:1:"0";s:5:"value";s:20:"Company Name is here";}i:2;a:7:{s:2:"id";s:1:"8";s:4:"slug";s:12:"contact-name";s:4:"name";s:12:"Contact Name";s:4:"type";s:4:"text";s:7:"options";s:0:"";s:9:"parent_id";s:1:"0";s:5:"value";s:8:"Name";}i:3;a:7:{s:2:"id";s:2:"10";s:4:"slug";s:13:"email-address";s:4:"name";s:13:"Email Address";s:4:"type";s:5:"email";s:7:"options";s:0:"";s:9:"parent_id";s:1:"0";s:5:"value";s:26:"example@gmail.com";}i:4;a:7:{s:2:"id";s:2:"12";s:4:"slug";s:15:"website-address";s:4:"name";s:15:"Website Address";s:4:"type";s:3:"url";s:7:"options";s:0:"";s:9:"parent_id";s:1:"0";s:5:"value";s:25:"http://example.com";}i:5;a:7:{s:2:"id";s:2:"15";s:4:"slug";s:13:"contact-phone";s:4:"name";s:13:"Contact Phone";s:4:"type";s:5:"phone";s:7:"options";s:0:"";s:9:"parent_id";s:1:"0";s:5:"value";s:12:"923246573632";}i:6;a:7:{s:2:"id";s:2:"16";s:4:"slug";s:12:"your-address";s:4:"name";s:12:"Your Address";s:4:"type";s:7:"address";s:7:"options";s:0:"";s:9:"parent_id";s:1:"0";s:5:"value";s:91:"House # 2, Street 27<br>Chah Mrain<br>Lahore, Punjab 54000<br>New Zealand";}i:7;a:7:{s:2:"id";s:2:"27";s:4:"slug";s:19:"listing-information";s:4:"name";s:19:"Listing Information";s:4:"type";s:8:"fieldset";s:7:"options";s:0:"";s:9:"parent_id";s:1:"0";s:5:"value";s:0:"";}i:8;a:7:{s:2:"id";s:2:"17";s:4:"slug";s:13:"listing-title";s:4:"name";s:13:"Listing Title";s:4:"type";s:4:"text";s:7:"options";s:0:"";s:9:"parent_id";s:1:"0";s:5:"value";s:17:"House of the Dead";}i:9;a:7:{s:2:"id";s:2:"19";s:4:"slug";s:12:"listing-type";s:4:"name";s:12:"Listing Type";s:4:"type";s:6:"select";s:7:"options";s:90:"a:4:{i:0;s:11:"Attractions";i:1;s:13:"Accommodation";i:2;s:5:"Tours";i:3;s:9:"Transport";}";s:9:"parent_id";s:1:"0";s:5:"value";s:13:"Accommodation";}i:10;a:7:{s:2:"id";s:2:"20";s:4:"slug";s:17:"listings-overview";s:4:"name";s:19:"Listing\'s Overview";s:4:"type";s:8:"textarea";s:7:"options";s:0:"";s:9:"parent_id";s:1:"0";s:5:"value";s:55:"Here is the overview of listing lets check what happens";}i:11;a:7:{s:2:"id";s:2:"21";s:4:"slug";s:10:"logo-image";s:4:"name";s:10:"Logo Image";s:4:"type";s:11:"file-upload";s:7:"options";s:31:"a:1:{i:0;s:13:"png|jpe?g|gif";}";s:9:"parent_id";s:1:"0";s:5:"value";s:80:"http://example.com/connect-icon.png";}i:12;a:7:{s:2:"id";s:2:"25";s:4:"slug";s:9:"longitude";s:4:"name";s:9:"Longitude";s:4:"type";s:4:"text";s:7:"options";s:0:"";s:9:"parent_id";s:1:"0";s:5:"value";s:0:"";}i:13;a:7:{s:2:"id";s:2:"26";s:4:"slug";s:8:"latitude";s:4:"name";s:8:"Latitude";s:4:"type";s:4:"text";s:7:"options";s:0:"";s:9:"parent_id";s:1:"0";s:5:"value";s:0:"";}i:14;a:7:{s:2:"id";s:1:"2";s:4:"slug";s:12:"verification";s:4:"name";s:12:"Verification";s:4:"type";s:12:"verification";s:7:"options";s:0:"";s:9:"parent_id";s:1:"0";s:5:"value";s:0:"";}i:15;a:7:{s:2:"id";s:1:"3";s:4:"slug";s:27:"please-enter-any-two-digits";s:4:"name";s:27:"Please enter any two digits";s:4:"type";s:6:"secret";s:7:"options";s:0:"";s:9:"parent_id";s:1:"2";s:5:"value";s:2:"14";}i:16;a:7:{s:2:"id";s:1:"4";s:4:"slug";s:6:"submit";s:4:"name";s:6:"Submit";s:4:"type";s:6:"submit";s:7:"options";s:0:"";s:9:"parent_id";s:1:"2";s:5:"value";s:0:"";}}
我只想替换变量中的值并将其保存在数据库中.
在Opencart 2.0.1.1中,我尝试上传一个具有正确名称格式的OCmod配置文件,.ocmod.xml但是我收到错误Modification requires a unique ID code!