Array_walk help

[jadeg]

I am trying to multiply every value in the array by 2. Below is my code. However i get the error Unsupported operand types in C 

<?php
session_start();

ini_set('display_startup_errors',1);
ini_set('display_errors',1);
error_reporting(-1);
$ftp_server="server";
$ftp_user_name="user";
$ftp_user_pass="pass";
	$conn_id = ftp_connect($ftp_server) or die ("Couldn't connect to $ftp_server");
	$login_result = ftp_login($conn_id, $ftp_user_name, $ftp_user_pass);

	if($login_result) {
		echo '<h1> Last Second Reading for Bridgetford T1 </h1>';
		$handle=file('ftp://user:pass@server/public_html/test.csv');
		
			$data =array();
			$i=0;
			foreach ($handle as $row) {
				if($i==0){
					$i++;
					}
				else {		
				$data1= explode(",", $row);
				$count=count($data1);
					for($c=0; $c<$count; $c++) {
					if($c>0){
				$data[$i][$c]=$data1[$c]; // populate 2 by 2 array
						}						
					}
				$i++;
			
				}
			}	


function myarray (&$val)
{   $val=$val*2.0;
}
array_walk($data,'myarray'); 

		var_dump($data);
    }
            	   
	else {
		echo "There is a problem\n";
	}
	
ftp_close($conn_id); 

?>

[denno020]

I just tried this on my local machine:

 

$data = array(4, 5, 6, 3, 4);
function myarray (&$val)
{   $val=$val*2.0;
}
array_walk($data,'myarray');
 
var_dump($data);

and it worked perfectly..

 

so, where exactly are you getting the error? And what is the full error?

 

Can you also do a dump of your $data array before you perform the array_walk, and post that here, so we can see what it is before hand.

[jadeg]

dump of array $data before I perform the array_walk works just file. After the array_walk though, I get an error 

 

fatal error: Unsupported operand types in C:www/wamp/....

[denno020]

I have no doubt it works, but I asked if you could copy the dump and paste it here, so we can see the content of your array.

[kicken]

Your array is multi-dimensional so in your function $val is another array (the second dimension), not a number.

 

You can use a loop to go over the first dimension.

foreach ($data as &$arr){
   array_walk($arr, 'myarray');
}

[jadeg]

Thank you