Hi
Can you see somthing I am missing?
My form is passing arrays to the process and the process is producing
some errors. I cannot see any problems. In fact I have two other simular
foreach loops that are not creating errors.
Thanks
[php]
<?php
$fee2_choice = strip_tags(trim($_POST['fee2_choice']));
$fee2_choice = array_filter($fee2_choice);//line 150
$fee2_choice = ereg_replace("[)(.-]","",$fee2_choice);

$fee2_code = strip_tags(trim($_POST['fee2_code']));
$fee2_code = array_filter($fee2_code); //line 155
$fee2_code = ereg_replace("[)(.-]","",$fee2_code);

$fee2_unit = strip_tags(trim($_POST['fee2_unit']));
$fee2_unit = array_filter($fee2_unit); //line 160
$fee2_unit = ereg_replace("[)(.-]","",$fee2_unit);

$fee2_describe = strip_tags(trim($_POST['fee2_describe']));
$fee2_describe = array_filter($fee2_describe);//line 165
$fee2_describe = ereg_replace("[)(.-]","",$fee2_describe);

$fee2_money = strip_tags(trim($_POST['fee2_money']));
$fee2_money = array_filter($fee2_money); //line 170
$fee2_money = ereg_replace("[)(.-]","",$fee2_money);

//loop through arrays that will be inserted into database
$indices = array_keys($fee2_code); //line 391
foreach($indices as $index) //line 392
{
$fee2_choice[$index];
$fee2_code[$index];//fee_code
$fee2_unit[$index];//number of units
$fee2_describe[$index];//description
$fee2_money[$index];//service fee

//evaluation and insert occur here
}

?>
[/php]

error messages received when form is submitted:
Warning: array_filter() [function.array-filter]: The first argument should be an array in D:\search_process.php on line 150
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 160
Warning: array_filter() [function.array-filter]: The first argument should be an array in D:\search_process.php on line 165
Warning: array_filter() [function.array-filter]: The first argument should be an array in D:\search_process.php on line 170
Warning: array_keys() [function.array-keys]: The first argument should be an array in D:\search_process.php on line 391
Warning: Invalid argument supplied for foreach() in D:\pulse_web_server\webroot\pulse\billing\billing_ohip_fee_search_process.php on line 392
:eek:

array_filter() takes two arguments you only gave it one.

Hi

Thanks for responding.

It is difficult to understand what the callback is can you explain better than the PHP manual?

Note: I was looking at Example 2. array_filter() without callback.

In that case you need to declare the variable you pass to it an array before passing it to that function.

Thanks for the response.

If I am already working with arrays do this?

[php]
$fee2_choice = new array($fee2_choice);
[/php]

The information coming from the form are arrays, see simple example.
[php]
//FORM FUNCTION
<?php
function name()
{
<tr>
<td name"\fee2_choice[]\"></td>
<td name"\fee2_code[]\"></td>
</tr>

$all_array = array(fee2_choice, fee2_code);
returned $all_array;
}//end of function

list($fee2_choice, $fee2_code) = $all_array;
?>
[/php]



Propose change
[php]
//PROCESS
<php>

$fee2_code = strip_tags(trim($_POST['fee2_code']));

$fee2_choice = new array($fee2_choice);

$fee2_code = array_filter($fee2_code);


</php>
[/php]

A TD can't be an array. Only form elements like INPUT.

That is correct. My mistake. This is the longer version of the code in the form function that dynamically create 20 to 49 rows.

[php]
echo"<tr height=\"10\">
<td width=\"4%\" bgcolor=\"#eeeee0\" align=\"center\"><input
type=\"checkbox\" name=\"fee2_choice[$i]\"
value=\"$code_id\"></td>
<td width=\"7%\" bgcolor=\"#eeeee0\" ><span class=\"style20
\"><strong>$fee2_code</strong></span></td>
<td width=\"3%\" bgcolor=\"#fff8dc\" height=\"10\">
<input type=\"text\" name=\"fee2_unit[$i]\" size=\"1\"
maxlength=\"2\" value =\"$fee_unit\"/></td>
<td width=\"79%\" bgcolor=\"#fff8dc\" class=\"style20\">
$description </td>
<td width=\"6%\" align=\"left\" >$p_fee</td>\n";
echo"</tr>\n";
[/php]

In your code, try dumping the cotents of the array before you use array_filter().
EG:

[PHP]var_dump($fee2_code);
$fee2_code = array_filter($fee2_code); //line 155[/PHP]

The error is because it isn't an array. Even though your HTML looks ok and it seem it should be an array.



The callback is a function that you define, that will be executed in another function.

If you were to implement callback functions in your own code, it could look something like:

[PHP]

/**
* Example of function using a callback. (same as array_filter except it will filter out empty strings also)
* @param array The array to filter
* @param function The callback function
*/
function my_array_filter($array, $callback = false) {

if (!$callback) {
$callback = 'trim'; // default callback function: trim()
}

$new_array = array(); // filtered array
foreach($array as $index=>$value) {
// execute the callback function passing it the argument: $value
if (call_user_func($callback, $value)) {
$new_array[$index] = $value;
}
}
return $new_array;
}

/**
* Example of my_array_filter()
*/

$arr = array('hey', false, true, '0', ' ', '');

var_dump(my_array_filter($arr));
echo '<br />';
var_dump(array_filter($arr));


[/PHP]


If you look at the function, my_array_filter, there is a line:

[PHP]call_user_func($callback, $value)[/PHP]

call_user_function will execute a user defined function. Since this function name is passed as an argument in to a function, then it is called a callback.
It just means its a chosen function to use inside another function...

Actually that explanation came out weird.

A simple example:

[PHP]


function my_callback_implement($callback, $argument) {

// some useful code here

$result = $callback($argument);

}

// example use


my_callback_implement('echo', 'This was echoed with echo() where echo is the callback function in my_callback_implement().');

[/PHP]

Here the argument you suply is executed as the callback function on teh line:
$result = $callback($argument);

as you can see its just the variable you supply, being called as a function. A callback function..


Anyways, back to the array_filter.

If you dont define the second argument in array_filter then it uses a callback function that just returns the value of the argument supplied.
So if the argument is false, it will be filtered out.

Edit:

Note:

[php]


$callback = 'echo';
$argument = 'Hello callback world';
$callback($argument);

[/php]

looks exactly like:

[php]

echo('Hello callback world');

[/php]

to php.

However we call 'echo' the callback function since it is user defined, and called at runtime.

Wow. Great explaination.
Thanks for the time and effort I will give it a shot.

"The best part of what I do are the problems. I then learn about the problem and how to solve it."