I am getting empty row on following sql SELECT * FROM flyers WHERE fId=’6′ AND ‘userId’=’400’ MySQL returned an empty result set (i.e. zero rows). (Query took 0.0004 sec) But when i use SELECT …
Tag: mysql
Escape a pdo query, is that necessary?
My question of to day is. Do i need to escape PDO in my script? $columns = implode(“, “,$column); $query = ”.$query.’ ‘.$columns.’ FROM ‘.$table.”; $dbh_query = $dbh->prepare($query); $dbh_query-…
Datatables + PHP: Server-Side Processing on Multiple Tables
How can I get Datatables Server-Side Processing script to work with a custom query? I need to select columns from multiple tables and have Datatables render them. Datatables.net’s Server-Side Processing (SSP) with PHP is summarized here: https://datatables.net/examples/server_side/simple.html I found th…
Delete button with alert does not work in php
If I click the delete button, then it is asking permission from me to delete the contents but after clicking, OK contents are not deleting. In my understanding, my code can not catch the id to delete …
PHP/SQL Dynamic menu depending on different tables
I’m trying to manage a dynamic menu based on results from tables in my database. Code below is so far i have come.. But i can’t get it to display as i want to. i have 3 tables in my database looking like this. ws_categories id maincat (name of main-category) ws_subcategories id subcat (Name of sub…
What are the generated files when creating a table in MySQL (.opt, .frm, .MYD, .MYI)
When I create a database in MySQL and create a table called flat in it, 4 files are generated: This happens every time a table is created. What are these files? Answer The file db.opt contains the database characteristics. It is updated every time the database is altered. For the remaining 3 files: table.frm …
mysqli_real_escape_string() expects parameter 1 to be mysqli, null given in
…/general.php on line 10 Hello, this is my error, but only occurs when I upload my web to a host, in the localhost run well. the (return mysqli_real_esc..)line is the “line 10”. thanks for your time!! Answer i think you have typo in your variable, please check your $connect => $conncet va…
No response from PHP on AJAX request
I am working on a simple signup page using jQuery and PHP using AJAX. Here is the script for making the ajax call: and the PHP script which responds to the call: signup.php: using PDO. dbconnect.php: Problem Neither of the two responses are being returned to the jQuery ajax call. I checked with console.log() …
Prevent InnoDB auto increment ON DUPLICATE KEY
I am currently having problems with a primary key ID which is set to auto increment. It keeps incrementing ON DUPLICATE KEY. For Example: From the description above, you’ll notice that I have 3 inputs in that table but due to auto increment on each update, ID has 86 for the third input. Is there anyway …
Laravel Migration – Adding Check Constraints In Table
I want to create a table in Laravel Migration like this- What I have done is- But I can’t create this- Can anyone please tell, how to implement this CHECK constraints in Laravel Migration ? Answer Adding constraints is not supported by the Blueprint class (at least as of Laravel 5.3), however it is poss…