Hi
Its back, I am being haunted.
I thought I had resolved this problem but I am intermittently
the receving the warnings below.
This code consist of a
1) HTML form,
2) a display function on the HTML form and
3) a process to manage the form input.

Can you show me what I am doing wrong and or how to correct it ?
Message received:

Warning: array_filter() [function.array-filter]: 
The first argument should be an array in D:\search_process.php on line 155
Warning: array_filter() [function.array-filter]: 
The first argument should be an array in D:\search_process.php on line 156
Warning: array_filter() [function.array-filter]: 
The first argument should be an array in D:\search_process.php on line 171
Warning: array_filter() [function.array-filter]: 
The first argument should be an array in D:\search_process.php on line 172

Note: I have proveded only a small portion of the related code.

<!--/**FORM**/-->
{//function start
//for loop start
{

echo"<tr height=\"10\">
<td width=\"4%\" bgcolor=\"#fff8dc\" align=\"center\">
<input type=\"checkbox\" name=\"fee1_choice[$i]\" value=\"$code_id\"></td>
<td width=\"7%\" bgcolor=\"#fff8dc\" ><span class=\"style20\"><strong>$fee1_code</strong></span></td>
<td width=\"3%\" bgcolor=\"$bgcolor\" height=\"10\">
<input type=\"text\" name=\"fee1_unit[$i]\" size=\"1\" maxlength=\"2\" value =\"$fee1_unit\"/>
</td>
<td width=\"79%\" bgcolor=\"$bgcolor\" class=\"style20\"> $description </td>
<td width=\"6%\" align=\"left\">$s_fee</td>\n";
echo"</tr>\n";
}//end of loop
//assign all arrays into single array for the return statement
$all_array = array(fee_choice, fee_unit, fee_money, fee1_choice, fee1_unit, fee1_fee, fee2_choice, fee2_code, fee2_unit, fee2_describe, fee2_money, fee3_choice, fee3_code, fee3_unit, fee3_describe, fee3_money);
//return array from function
return ($all_array);
}//end of function
//unpack returned array
list($fee_choice, $fee_unit, $fee_money, $fee1_choice, $fee1_unit, $fee1_fee, $fee2_choice, $fee2_code, $fee2_unit, $fee2_describe, $fee2_money, $fee3_choice, $fee3_code, $fee3_unit, $fee3_describe, $fee3_money )= $all_array;

I changed the format of the array returned by the function
and thoug thr problem was solved but I startr to get the errors again

<?
$all_array = array($fee_choice, $fee_unit, $fee_money, $fee1_choice, 
$fee1_unit, $fee1_fee, $fee2_choice, $fee2_code, $fee2_unit, $fee2_describe, 
$fee2_money, $fee3_choice, $fee3_code, $fee3_unit, $fee3_describe, $fee3_money);
?>



<?php
/**PROCESS**/
/**data from form**/
$fee_unit = $_POST['fee_unit'];//array with the number of units
$fee_money = $_POST['fee_money'];//array selected fee
//filter blank indexes
$fee_unit = array_filter($fee_unit);  //line 155
$fee_money = array_filter($fee_money); //line 156

/**data from form**/
$fee1_unit = $_POST['fee1_unit'];//array with the number of units
$fee1_money = $_POST['fee1_money'];//array selected fee

//filter blank indexes
$fee1_unit = array_filter($fee1_unit); //line 171
$fee1_money = array_filter($fee1_money);//line 172
/** get array contents for insertion**/
$indices2 = array_keys($code1_id);
foreach($indices2 as $index2)
    {
        //individual value validation from 3 arrays
        $code1_id[$index2];
        $fee1_unit[$index2];
        $fee1_money[$index2];

        //validate unit
        $field_unit = $fee1_unit[$index2];//assign field to array for function
        check_unit_field($field_unit);//funtion to validate user entered numbers or message sent

        //insert statement goes here

    }
?>   

I have added the code below to the process to get rid of
the errors but this creates another problem where the
foreach loop can't extract the data from the arrays.

<?
//create array A
$fee_unit = array($fee_unit);
$fee_money = array($fee_money);

//create array B
$fee1_unit = array($fee1_unit);
$fee1_money = array($fee1_money);
?>

Edited 3 Years Ago by mike_2000_17: Fixed formatting

Try using the is_array() function which returns true only if the argument is an array. That way you can make sure you're only passing arrays to array_filter().

eg:

if (is_array($array)) {
   $filtered_array = array_filter($array, 'filter_function_name');
}

or maybe:

if (is_array($array)) {
   $filtered_array = array_filter($array, 'filter_function_name');
} else {

   // maybe its a string so make it an array
   $array = array($array);
   $filtered_array = array_filter($array, 'filter_function_name');

}

Try using the is_array() function which returns true only if the argument is an array. That way you can make sure you're only passing arrays to array_filter().

eg:

if (is_array($array)) {
   $filtered_array = array_filter($array, 'filter_function_name');
}

or maybe:

if (is_array($array)) {
   $filtered_array = array_filter($array, 'filter_function_name');
} else {
 
   // maybe its a string so make it an array
   $array = array($array);
   $filtered_array = array_filter($array, 'filter_function_name');
 
}

Hi

Thanks for the suggestion.

I have been using this bit of code to resolve the problem for over
a week and have not received the error message.
This can be considered resolved.

/*** arrays passed from the form with selected service variables ***/
 $code_id = $_POST['fee_choice']; //array of code_id primary key
 $fee_unit = $_POST['fee_unit'];//array with the number of units
 $fee_money = $_POST['fee_money'];//array selected fee

    //filter array $fee_unit
 if(is_array($fee_unit))
     {
   $fee_unit = array_filter($fee_unit);
  }
  else
   {
     $fee_unit = array($fee_unit);
      $fee_unit = array_filter($fee_unit);
    }
   //filter array $fee_money
 if(is_array($fee_money))
     {
   $fee_money = array_filter($fee_money);
  }
  else
   {
       $fee_money = array($fee_money);
       $fee_money = array_filter($fee_money);
    }
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