如何将当前迭代中的数组大小与先前迭代中的数组大小进行比较

Question

$array_size is giving array size of array $expkey in each iteration. On each iteration I want to compare present array size with the previous array size. How to do this plus in on first iteration there is no prev array size so it should not give some offset index. So how to do it. Thank you for help in advance.

<?php

if (isset($_POST['submit'])) {

    unset($_POST['submit']);
    unset($_POST['ew-language__en']);

    function printxml ($array)
    {
        $xml = new DOMDocument('1.0','UTF-8');
        $xpath = new DOMXPath($xml);
        $xml->formatOutput = true;

        $last_index_ids = array();
        $parentid = array();
        $i_id=0;
        $x=0;

        foreach ($array as $key => $value)
        {

            $key = $key;
            //contains all the values of respective ids
            $attrvalue= $value;

            if ($array[$key] == "" || ctype_space($array[$key]) ) {
                $array[$key] = null;
            }
            //split unique input field names
            $expkey = explode("__", $key);

            $array_size=sizeof($expkey);

            echo"<pre>"; print_r($array_size); echo "</pre>";

            //first tag <ew-lang>
            $first_key =($expkey[0]);


            print_r($array_size);



        }
        $xml->save("file.xml");
    }
    printxml($_POST);

}
?>  

on printing $array_size output is

1
1
5
5
8
8
11
11
8
8
5
5
5
5
5
5
1
1
5
5
5
5

$array is

 Array
(
    [global] => global
    [ew-language__en__0__phrase__actiondeleted] => Deleted
    [ew-language__en__0__phrase__actiondeleted__0__child_phrase__1234] => numbers
    [ew-language__en__0__phrase__actiondeleted__0__child_phrase__1234__0__child_phrase_1__abc] => test
    [ew-language__en__0__phrase__actiondeleted__1__child_phrase_2__5678] => numerics
    [ew-language__en__1__phrase__actioninserted] => Inserted
    [ew-language__en__2__phrase__actioninsertedgridadd] => Inserted
    [ew-language__en__3__phrase__actionupdated] => Updated
    [project] => project
    [ew-language__en__0__phrase__actioninserted] => Inserted
    [ew-language__en__1__phrase__actioninsertedgridadd] => Inserted
)

where as I am checking array size of $expkey which is

Array
(
    [0] => global
)
Array
(
    [0] => ew-language
    [1] => en
    [2] => 0
    [3] => phrase
    [4] => actiondeleted
)
Array
(
    [0] => ew-language
    [1] => en
    [2] => 0
    [3] => phrase
    [4] => actiondeleted
    [5] => 0
    [6] => child_phrase
    [7] => 1234
)
Array
(
    [0] => ew-language
    [1] => en
    [2] => 0
    [3] => phrase
    [4] => actiondeleted
    [5] => 0
    [6] => child_phrase
    [7] => 1234
    [8] => 0
    [9] => child_phrase_1
    [10] => abc
)
Array
(
    [0] => ew-language
    [1] => en
    [2] => 0
    [3] => phrase
    [4] => actiondeleted
    [5] => 1
    [6] => child_phrase_2
    [7] => 5678
)
Array
(
    [0] => ew-language
    [1] => en
    [2] => 1
    [3] => phrase
    [4] => actioninserted
)
Array
(
    [0] => ew-language
    [1] => en
    [2] => 2
    [3] => phrase
    [4] => actioninsertedgridadd
)
Array
(
    [0] => ew-language
    [1] => en
    [2] => 3
    [3] => phrase
    [4] => actionupdated
)
Array
(
    [0] => project
)
Array
(
    [0] => ew-language
    [1] => en
    [2] => 0
    [3] => phrase
    [4] => actioninserted
)
Array
(
    [0] => ew-language
    [1] => en
    [2] => 1
    [3] => phrase
    [4] => actioninsertedgridadd
)

Answer 1

Maybe try and store a before and after value after calculating final ($array_size):

<?php

    $arr[]  =   1;
    $arr[]  =   3;
    $arr[]  =   4;
    $arr[]  =   1;

    // This is just a hypothetical loop just to demonstrate concept
    // representing the loop: foreach ($array as $key => $value)
    foreach($arr as $array_size) {

            //******************************************************//
            // Do all your code that gets to to the final count here
            //******************************************************//

            $calculated =   $array_size;

            if(isset($check)) {
                    if($calculated < $check)
                        echo $calculated.' is less than '.$check;
                    else
                        echo $calculated.' is more than '.$check;

                    echo '<br />';
                }
            else
                echo $calculated.' is first'."<br />";

            $check      =   $array_size;
        }
?>

Gives you:

1 is first
3 is more than 1
4 is more than 3
1 is less than 4