How do i add associative array to array in php?

//go through each question
foreach[$file_data as $value] {
   //separate the string by pipes and place in variables
   list[$category, $question] = explode['|', $value];

   //place in assoc array
   $data = array[$category => $question];
   print_r[$data];

}

This is not working as it replaces the value of data. How can I have it add an associative value each loop though? $file_data is an array of data that has a dynamic size.

MaxiGui

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asked Mar 21, 2011 at 23:11

You can simply do this

$data += array[$category => $question];

If your're running on php 5.4+

$data += [$category => $question];

answered Sep 8, 2014 at 5:52

I think you want $data[$category] = $question;

Or in case you want an array that maps categories to array of questions:

$data = array[];
foreach[$file_data as $value] {
    list[$category, $question] = explode['|', $value, 2];

    if[!isset[$data[$category]]] {
        $data[$category] = array[];
    }
    $data[$category][] = $question;
}
print_r[$data];

webvitaly

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answered Mar 21, 2011 at 23:13

ThiefMasterThiefMaster

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Before for loop:

$data = array[];

Then in your loop:

$data[] = array[$catagory => $question];

Uwe Keim

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answered Mar 21, 2011 at 23:12

moemoe

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I know this is an old question but you can use:

array_push[$data, array[$category => $question]];

This will push the array onto the end of your current array. Or if you are just trying to add single values to the end of your array, not more arrays then you can use this:

array_push[$data,$question];

lasec0203

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answered Jun 29, 2017 at 15:54

MikeMike

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For anyone that also need to add into 2d associative array, you can also use answer given above, and use the code like this

 $data[$category]["test"] = $question

you can then call it [to test out the result by:

echo $data[$category]["test"];

which should print $question

answered Dec 19, 2017 at 7:34

maximranmaximran

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How do I add data to an associative array?

Normally add a new element in an existing associative array it will get appended at the end of that array. print_r[ $arr ]; ?> So, a new element can not be added directly at the beginning of an associative array but the existing array can be appended at the end of a new array where the first element is the new element.

How do you combine two associative arrays?

PHP array_merge[] Function.

Merge two arrays into one array: $a1=array["red","green"]; $a2=array["blue","yellow"]; ... .

Merge two associative arrays into one array: $a1=array["a"=>"red","b"=>"green"]; $a2=array["c"=>"blue","b"=>"yellow"]; ... .

Using only one array parameter with integer keys: $a=array[3=>"red",4=>"green"];.

Does In_array work for associative array?

in_array[] function is utilized to determine if specific value exists in an array. It works fine for one dimensional numeric and associative arrays.

What is associative arrays in PHP explain it with simple PHP code?

Associative Array - It refers to an array with strings as an index. Rather than storing element values in a strict linear index order, this stores them in combination with key values. Multiple indices are used to access values in a multidimensional array, which contains one or more arrays.

How do I add data to an associative array?

How do you combine two associative arrays?

Does In_array work for associative array?

What is associative arrays in PHP explain it with simple PHP code?

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