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+--- Thread: Input 4 first digit from column A to column B (/showthread.php?tid=72571)
Input 4 first digit from column A to column B - kelapamuda - 01-07-2019
Hello everybody.
This is simple, i had goggle but havent find result that suit me.
What I want is something like this. The column A is A_number, and column B is B_number.
So I want this condition : for example when user type input 123456789 into column A, the column B automatically filled with 1234
How to do this automatically?
RE: Input 4 first digit from column A to column B - Zigi84 - 01-07-2019
If i understood properly what you meant, here is the solution with native js:
http://jsfiddle.net/y3whbn4o/1/
RE: Input 4 first digit from column A to column B - kelapamuda - 01-08-2019
Is it possible to do that using php only(without js)?
RE: Input 4 first digit from column A to column B - Codinglander - 01-09-2019
PHP Code:
string substr ( string $string , int $start [, int $length ] )
RE: Input 4 first digit from column A to column B - Pertti - 01-09-2019
So you want to access first 4 digits, regardless of what the number is?
Could probably get away with using string functions and literally get first 4 characters out of the string.
PHP Code:
$a = 123486868686868;
$aString = strval($a);
$b = substr($aString, 0, 4);
All POST data comes in as string anyway, and PHP is quite good at converting types in and out as it is, but I added extra step in there just to point out string conversion.