DavSev DavSev - 1 year ago 78
PHP Question

php array comperation, complete missing array locations

I have two arrays:

$array1 = array('name', 'email', 'phone');
$array2 = array('name' => 'John', 'phone' => '55-555-555');

I have created a HTML table from this two arrays, array1 is the table heads, and array2 is the td contents.

what happens now is that becouse array2 is missing a value (email in this case) I will get the phone data under the mail column.
i would like to get this result:

$array2 = array('name' => 'John', 'email' => ' ', 'phone' => '55-555-555');

I tried to follow this answer, but it has two main problems:

  1. the array keys desapear.

  2. the
    values are added at the end of the array and not in their original location.

Answer Source

Your source array is wrong. You need to have something like this:

$array1 = array('name' => '', 'email' => '', 'phone' => '');

And if you want to extend with the empty values, you can use:

$array2 = array('name' => 'John', 'phone' => '55-555-555');

The final array can be made by using array_merge:

Merges the elements of one or more arrays together so that the values of one are appended to the end of the previous one. It returns the resulting array.

$array2 = array_merge($array1, $array2);

You will get this as output:

array('name' => 'John', 'email' => '', 'phone' => '55-555-555');

Full Code

$array1 = array('name' => '', 'email' => '', 'phone' => '');
$array2 = array('name' => 'John', 'phone' => '55-555-555');
$array2 = array_merge($array1, $array2);


array (
  'name' => 'John',
  'email' => '',
  'phone' => '55-555-555',

Demo: http://ideone.com/7zlab7

Better Explanation

// Have a base array that has all the required fields.
$baseArr = array('name', 'email', 'phone', 'password');
// Get your array with the initial values, (without a few fields).
$myArray = array('name' => 'david', 'email' => 'aaa@aaa.aaa', 'phone'=> '123456789');
// Now make a new array on the fly with array_fill_keys using the baseArr
// and merge with the original user array.
$myArray = array_merge(array_fill_keys($baseArr, ''), $myArray);
// The resultant array will have all the fields.


    [name] => david
    [email] => aaa@aaa.aaa
    [phone] => 123456789
    [password] => 

Demo: http://ideone.com/XLCMN9

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