Am using php MySQL and i have a table which get filled, i want to be able to remove already selected data from list(frontend) automatically to avoid multiple selection and not having two of the same data in the table how do i go about this, thanks.

for example, if on the drop menu we have

mike
Jacob
Steve
David

if someone already selected David i don't want him to show up on the list

plz note i already have already exist code, i just need to know how not to show it, thanks

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var array = ['a', 'b', 'a', 'c', 'a', 'd'];
// the list
var element = 'a';
// selected element
var idx = array.indexOf(element);
// first find the element index
while (idx != -1) {
// this makes sure the element is defined in the list
array.splice(index, 1);
// this return a new list without the selected element
}

Note that this wont work in older browsers like ie 7 but if you target such, you can use polyfills.

roadsta:
var array = ['a', 'b', 'a', 'c', 'a', 'd'];
// the list
var element = 'a';
// selected element
var idx = array.indexOf(element);
// first find the element index
while (idx != -1) {
// this makes sure the element is defined in the list
array.splice(index, 1);
// this return a new list without the selected element
}

Note that this wont work in older browsers like ie 7 but if you target such, you can use polyfills.

looks like javascript

^^
Oh yes! it is javascript. Just translate it to favourite language, But if you can´t do it.
tell me your favourite
language

skyhighweb:
looks like javascript

skyhighweb:
Am using php MySQL and i have a table which get filled, i want to be able to remove already selected data from list(frontend) automatically to avoid multiple selection and not having two of the same data in the table how do i go about this, thanks.

for example, if on the drop menu we have

mike
Jacob
Steve
David

if someone already selected David i don't want him to show up on the list

plz note i already have already exist code, i just need to know how not to show it, thanks

Select unique columnname from table or if u need more than one column and u don't want a particular column to repeat value use select * from table group by norepeatcolumnname

roadsta:
^^
Oh yes! it is javascript. Just translate it to favourite language, But if you can´t do it.
tell me your favourite
language

php

vicsrael:
Select unique columnname from table or if u need more than one column and u don't want a particular column to repeat value use select * from table group by norepeatcolumnname

not asking about that

skyhighweb:
not asking about that

Explain better than

vicsrael:
Explain better than

how can i make a selected data not show up in list anymore.
for example on the list are
steve
mike
dave
moses
if someone select dave i dont want it to show up on the list anymore. hope u understand.

skyhighweb:
php

In that case all you need to do is :

- grab the value from the array
- then call unset($value) to remove it

roadsta:

In that case all you need to do is :

- grab the value from the array
- then call unset($value) to remove it

okay how do i do that, am not fully sure which code to edit or add

skyhighweb:
okay how do i do that, am not fully sure which code to edit or add

Try to be more elaborate in your questions(detailed information) if you want an elaborate answer.
O.k Lets see an example :

From your initial post,i understaood that you have a list of names like "array(mike, jacob, steve, David); right?

If so, all you have to do is iterate through the list, grab the selected element in the list and remove with the unset fuction passing in the key :

As an example:

$users = [mike, jacob, steve, david];

foreach($users as $key=>$val)
{
if ($val==david) unset($names[$key]);
}
print_r($users);

I hope this should help solve the problem.

roadsta:


Try to be more elaborate in your questions(detailed information) if you want an elaborate answer.
O.k Lets see an example :

From your initial post,i understaood that you have a list of names like "array(mike, jacob, steve, David); right?

If so, all you have to do is iterate through the list, grab the selected element in the list and remove with the unset fuction passing in the key :

As an example:

$users = [mike, jacob, steve, david];

foreach($users as $key=>$val)
{
if ($val==david) unset($names[$key]);
}
print_r($users);

I hope this should help solve the problem.

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