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Continue SQL injection if the resource ID does not exist

By: zwellIt seems that SQL injection is a common practice. In fact, it is not the case. During the development of Pangolin, I have encountered too many special cases and continue to use in-depth injection methods. Here we will talk about the

Mysql If the data does not exist, insert new data, otherwise the update implementation method _mysql

If it does not exist, insert the new data $sql = "INSERT into {$ecs->table (' Cat_lang ')} (CAT_ID,LANG_ID,CAT_NAME,KEYWORDS,CAT_DESC) VALUES ({$cat _id},{$k}, ' {$val [' cat_name ']} ', ' {$val [' keywords ']} ', ' {$val [' Cat_desc ']} '} ') On

Implementation Method of updating if a MySQL record does not exist and an insert record exists

Insert when the MySQL record does not exist In MySQL, inserting a record is very simple, but in some special applications, before inserting a record, you need to check whether the record already exists. The insert operation is performed only when

MySQL insert when record does not exist (insert if not exists)

In MySQL, inserting (insert) A record is simple, but some special applications, before inserting a record, need to check whether the record already exists, only if the record does not exist to perform the insert operation, this article describes the

MySQL insert when record does not exist (insert if not exists)

In MySQL, inserting (insert) A record is simple, but some special applications, before inserting a record, need to check whether the record already exists, only if the record does not exist to perform the insert operation, this article describes the

Apache file does not exist jump URL (to achieve the specified size of the picture does not exist, the image is automatically generated)

PrefaceWhen we do a lot of systems, we may have the need to:Only one picture is maintained in the CMS, and this image needs to be displayed in many parts of the site, and the size of the display is different.The general practice is to use this image

Mysql inserts new data if the data does not exist. Otherwise, the update method is used.

// If no data exists, insert new data $ SQL = "INSERT INTO {$ ecs-> table ('cat _ lang ')} (cat_id, lang_id, cat_name, keywords, cat_desc) VALUES ({$ cat_id}, {$ k}, '{$ val ['cat _ name']}', '{$ val ['keyword']}', '{$ val ['cat _ desc']}') On

If the data record does not exist in MySQL, insert it. Otherwise, update the data record.

// If no data exists, insert new data$ SQL = "insert into {$ ECs-> table ('cat _ Lang ')} (cat_id, lang_id, cat_name, keywords, cat_desc)Values ({$ cat_id}, {$ k}, '{$ Val ['cat _ name']}', '{$ Val ['keyword']}', '{$ Val ['cat _ desc']}')On

Implementation Method of updating if a mysql record does not exist and an insert record exists

Insert when the mysql record does not existIn MySQL, inserting a record is very simple, but in some special applications, before inserting a record, you need to check whether the record already exists. The insert operation is performed only when the

If the MySQL record does not exist, the insert record exists the implementation method of the update _mysql

Insert when MySQL record does not existIn MySQL, inserting (insert) A record is very simple, but some special applications, before inserting the record, need to check whether this record already exists, only if the record does not exist, the insert

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