check multiple values from checkbox in PHP

Question

I have this form :

<form action="" method="post">
<input type="checkbox" name="check_list[]" value="0" id="check_list">- 0<br>
<input type="checkbox" name="check_list[]" value="1" id="check_list">- 1<br>
<input type="checkbox" name="check_list[]" value="2" id="check_list">- 2<br>
<input type="checkbox" name="check_list[]" value="3" id="check_list">- 3<br>
<input type="checkbox" name="check_list[]" value="4" id="check_list">- 4<br>
<input type="checkbox" name="check_list[]" value="5" id="check_list">- 5<br>
<input type="checkbox" name="check_list[]" value="6" id="check_list">- 6<br>
<input type="checkbox" name="check_list[]" value="7" id="check_list">- 7<br><br>
<input type="submit" name="submit" Value="Submit"/>
</form>

Now I wont to check the result from this form ,, if result have (2,3,6) we need to do something, and if result have value (2,3) we need to do something, and if result have value (2) we need to do something, and if result have value (3) we need to do something,and if result have value (6) we need to do something,

How can do that in php ?

I try this but not work good with me

if(!empty($_POST['check_list'])) {

    foreach($_POST['check_list'] as $check) {
    if ($check =='2' && $check =='3' && $check =='6'){
        // do something
    } elseif ($check =='2' && $check =='3'){
        // do something
    } elseif ($check =='6'){
        // do something
    } elseif ($check =='3'){
        // do something
    } elseif ($check =='2'){
        // do something
    }
}
}

Also i try this and not do any thing

if(in_array(array(2,3,6),$_POST['check_list'])){ 
// not work
} elseif(in_array(array(2,3),$_POST['check_list'])){ 
// not work
} elseif(in_array(array(2),$_POST['check_list'])){ 
// work
} elseif(in_array(array(3),$_POST['check_list'])){ 
// work
} elseif(in_array(array(7),$_POST['check_list'])){ 
// work
}

Have you tried using a switch statement php.net/manual/en/control-structures.switch.php — Eliot
– Eliot, Commented May 29, 2018 at 20:59
if ($check =='2' && $check =='3' && $check =='6'){ how can $check be more than one thing at a time? — user9487972
– user9487972, Commented May 29, 2018 at 21:10

Plixxer · Accepted Answer · 2018-05-29 21:19:10Z

1

    <?php

if(!empty($_POST['check_list'])){
    if(
        has_values(Array(2,3,6), $_POST['check_list'])
    ){
        //Do what you need to do

    }else if(
        has_values(Array(2,3), $_POST['check_list'])
    ){
        //Do what you need to do

    }else if(
        has_values(Array(2), $_POST['check_list'])
    ){
        //Do what you need to do

    }
}else{
    //no checkboxes have been set
}

function has_values($testValues, $arrValues){
/*
    testValues is a 1 dimensional array (needles)
    arrValues is a 1 dimensional array that takes the array of set checkboxs ( haystack )
*/
    foreach ($testValues as $key => $value) {
        if(!in_array($value, $arrValues)){
            return false;
        }
    }
    return true;
}

Developer notes in_array is not type dependent.

if a checkbox is not checked the $_POST['check_list'] index will changes

edited May 29, 2018 at 21:19

answered May 29, 2018 at 21:12

Plixxer

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1 Comment

user9487972 Over a year ago

i think array_diff or array_intersect is probably better, but this will work so you can have my vote.

Gutierrez PS · Accepted Answer · 2018-05-29 21:02:37Z

1

In short, when you submit the form you'll have an array $_POST['check_list'] that contains the elements you've checked. So, if you check 2, 3 and 6, $_POST['check_list'] = [2, 3, 6]. Note that if you don't check any options, $_POST['check_list'] will not exist.

Then you can use if (in_array(2, $_POST['check_list'])) {...} to do what you want if 2 is checked, for example.

answered May 29, 2018 at 21:02

Gutierrez PS

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4 Comments

abukotsh Over a year ago

what about if i have 2,3,6 ? how can use it in in_array ??

Gutierrez PS Over a year ago

You can check this answer

Plixxer Over a year ago

@GutierrezPS comparing $_POST['check_list'] will not work as intended if other options are checked. use the empty function to check if $_POST['check_list'] has been set.

Barmar Over a year ago

@abukotsh in_array(2, $array) && in_array(3, $array) && in_array(6, $array)

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