Php mysqli bind_param not working
So we learn a harsh truth here: Luckily, since version 5. But nevertheless it takes two times more code than PDO and isn't much portable, as it cannot be run on PHP versions less than 5. You won't believe it, but one cannot fetch a regular associative array from a prepared statement in mysqli. By default, it will let you only bind the resulting array. I am the only person to hold a gold badge in , and on Stack Overflow and I am eager to show the right way for PHP developers.
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Markdown is now supported: Mysqli Why mysqli prepared statemens are so hard to use? Why mysqli prepared statemens are so hard to use? WTF 1 Binding unknown number of parameters When moving from sandbox textbook examples a little further, PHP programmers face with necessity to bind variables not by hand, but by means of an automated process.
For this we heed to supply the first parameter in the form as array consists of two elements - an object variable and the method name: Alas, we'll get an error. The saving grace Luckily, since version 5. WTF 2 Binding unknown number of results You won't believe it, but one cannot fetch a regular associative array from a prepared statement in mysqli. By default, it will let you only bind the resulting array Related articles: How to use mysqli properly How to use mysqli properly How to check whether a value exists in a database using mysqli prepared statements Warning: Mysql will then perform its own conversions with values it receives from PHP on execute.
This auto-string casting behavior greatly improves things like datetime handling. There are some things to note when working with mysqli:: Best shown in an example: You can use Reflection to call mysqli:: When using PHP 5. There is however a known bug when using this operator with datetime or timestamp fields: Simple workaround for casting: A lot of newcommers to mysqli find it hard to get started.
I hope it'll be usefull for others as well: The soloution is this function: NOTES to new users! Or programmers like myself who learn the hard way!!!
Pay attention to the variables that are given in the function up above. You can not pass straight data through here. Just a clarification as to avoid another night like mine last night and this morning.
For those learning mysqli:: Could not connect to database. Please try again later. When dealing with a dynamic number of field values while preparing a statement I find this class useful. Create an instance and use the add method to populate. When you're ready to execute simply use the get method. Dont forget that in the query that you are preparing you do NOT need quotes around string values.
Number of variables doesn't match number of parameters in prepared statement. But I didn't found one. So I have just written up this little piece of code I would like to share with you. And for me it works. In my case I have to use it.
The cool thing about this solution: This function assumes you have put it into a class that have: The class then transforms the data to 3NF. The reflection class throws an exception. Other import sets using this code work just fine. Parameter 41 is the last parameter. Changing the affected code as follows resolves the issue: I think this is a good way to automatically get the types for the binding in as few lines of code as possible.
If you bind the array values in the same order as when you used it for this you should not worry about aligning them.