php - My While loop is not working, why? -

i have question in relationship loops in php. trying play actions elements of array, last one. need:

1- know array not empty.

2- pickup last item name of array. because need execute step0.php script.

3- delete last item of array.

i want repeat action until value of array 0 , go out loop.

i tried had not lucky. :-(

any idea?

$array2; $array1; $diffe_array = array_diff($array2, $array1);  //create condiction $diffe=count($diffe_array); {      $lastone=end($diffe_array);      require('./step0.php');      $extract=array_pop($diffe_array);       $diffe=count($diffe_array);      print_r($diffe_array); } while ($diffe > 0);  echo 'just have 0 items in array!!!!'; 

to complete question think necessary have clear (with example):

step1.- have $array2 this:

array2 ( [0] => 00004.csv [1] => 00007.csv [2] => 00005.csv [3] => 00003.csv [4] => 00002.csv [5] => 00001.csv [6] => 00006.csv [7] => 00000.csv )

step2.- have &array1 this:

array1 ( [0] => 00004.csv [1] => 00003.csv [2] => 00002.csv [3] => 00001.csv [4] => 00000.csv )

step3.- calculate diffe_array array_diff($array2,$array1):

diffe_array ( [1] => 00007.csv [2] => 00005.csv [6] => 00006.csv )

step4.- need create loop extract each item diffe_array , use in other script step0.php (this script open file same name of last item in diffe_array , share info database). need until diffe_array empty, goes out form loop.

by way, content of step0.php is:

<?php  function conection()  {        if (!($link=pg_connect("host=xxxxx port=xxxx dbname=xxxxx user=xxxxx password=xxxxx")))  {             echo "error connecting database.";            exit();        }        return $link; } require_once('./process.php');//this before file $rute="/rute/to/my/file/"; $end= $rute.$lastone; $row = 0; $handle = fopen($end, "r");  while (($data = fgetcsv($handle, 1000, ",")) !== false) {      $num = count($data);      $row++;     echo '<b><br/><br/>';     $request = "insert table(column1,column2,column3,column4) values(";      ($c=0; $c < $num; $c++) {          if ($c==($num-1))               $request = $request."'".$data[$c] . "'";         else               $request = $request."'".$data[$c] . "',";     }      $request = $request.");";      echo $request."<br>";         $union=conection();      $result=pg_query($union, $request);       pg_close($union); }  fclose($handle);  ?> 

first of - following code - $array1 , $array2 have no values, suppose array_diff() function return error.

second, code, you'll going include step0.php @ every loop. isn't approach.

last point: why use count() every time, if know count before enter loop , pop 1 element? isn't better decrement $diffe variable?