How can I connect to a MySQL database in C#, and use it to UPDATE values in the database, INSERT values in the database and SELECT values from the database. Also, is it possible to get the value of …
Tag: mysql
Select Random Row from SQL Using PHP
I want to request 5 random rows from my SQL table using php. for instance, i need to: Answer Edit: For what its worth, Please note that using rand() on a table with large number of rows is going to be slow. This can actually crash your server. Some Solution: MediaWiki uses an interesting trick (for Wikipedia&…
PDO connection works from command line, but not through Apache?
I have a very simple test script: When I execute this script from the command line, it works perfectly: But when I access the exact same script through my web browser, it says: I’ve tried var_dump on the error, and the message is: “SQLSTATE[HY000] [2003] Can’t connect to MySQL server on R…
Inserting a multi-dimensional php array into a mysql database
I have an array from a csv with a similar structure to this: I would like to insert it into a MySQL table where the items of the first array (name, age, gender) are the column titles and each subsequent array is a row in the table. Could anyone advise as to the best way to do this? Answer The
php how to store and read json data via mysql?
php how to store and read json data via mysql? then, how to update data value? read out the data, then insert it with an json_encode and decode process, or only easy way update? then insert another change to [{“id”: “1”, “value”: “yes”},{“id”: “…
Json encode an entire mysql result set
I want to get json with php encode function like the following i want the output json to be something like that but the output json is look like the following As you realize that there is comma at the end, i want to remove it so it can be right json syntax, if i removed the echo “,”; when
What is better practice when storing a users full name in the database? 1 or 2 columns?
Is it considered better practice to store a first_name and a last_name in 2 separate columns? or would storing both in 1 column be ok? Answer Only you know that, really. It depends if you’re ever going to need to get those parts of the name back out separately. Storing first name and last name in a sing…
How do I ensure I caught all errors from MySQLi::multi_query?
The docs for multi_query say: Returns FALSE if the first statement failed. To retrieve subsequent errors from other statements you have to call mysqli_next_result() first. The docs for next_result say: Returns TRUE on success or FALSE on failure. Finally, the example posted in the docs for multi_query use the…
How to count Total Downline , Give me any Idea (MLM project)
Anyone give me any Idea about How I can Count down-line for a MLM project (PHP/MySQL). Currently I’m using the below method. but when my database record become 300 or more, then it shows: maximum execution time of 30 second exceeded in line 51. (I think this happens for unlimited loop). please help me. …
How to check if ID in database exists
Why won’t this send the user to user.php if the ID don’t exist in the table? Answer Try something like this :). http://php.net/manual/en/function.mysql-num-rows.php