Modify values in assoicative array

ryland22

I have an associative array (an array filled with arrays), trhat looks like this:

Name: Mike
Color: red
Quantity: 2

Name: Kim
Color: green
Quantity: 5

I want to loop through array until I find the name "Mike" and then modify the quantity by 1. For the life of me I can't figure out how to do this. Any help is greatly appreciated, below is my code:

<?php
$var1 = "mike";
$var2 = 3;
$var3= "red";

$arr= array("cart"=> array($var1,$var2,$var3));
?>
<font color="red">Original array:</font><br>

<?php
echo $arr["cart"][0];
echo "<br>";

print_r ($arr["cart"]);
?>

<p>
<font color="red">Add new info to array:</font><br>



<p>
<font color="red">Loop through array and check if name "Mike"  exists in it, if so update quantity by 1:</font><p>

<?php
foreach ($arr as $arrnew) {
	if ($arrnew[0]=="mike"){
	echo "Mike does exist";	
#here is where my problem is
	$arr[0][1]=$arrnew[1]+1;
}
}
?>
<p>
<p>
<font color="red">Loop through array, organized by key </font><br>
<?php

foreach ($arr as $arrnewer) {
   echo "Name is: $arrnewer[0]<br>";
   echo "Quantity: $arrnewer[1]<br>";
}
print_r ($arr);

?>

Drakla

I've only just glanced at your code, but I think using the key, value form of foreach would help, so you'd have

foreach($arr as $key=>$arrNew)
{
    if($arrNew[0])=='Mike')
    {
        $arr[$key][2]++;
    }
}

Or something

ryland22

I ran your code, first modified it to the following:

foreach($arr as $key=>$arrNew) 
{ 
    if($arrNew[0]=='Mike') 
    { 
        echo "mike exists";
        $arr[$key][1]++; 
    } 
}

When I ran your code, the loop is not recognizing that "Mike" exists within the array.

Drakla

Ooops, it's not because I put Mike with a capital at the start, is it?

ryland22

Yes, having "Mike" capitalized created the error. After I lowercased "mike" the echo worked, but modifying the value did not work.

Drakla

I just tried this

echo '<pre>';

$arr = array("kent" => array("mike", 2, "red") );

print_r($arr);

foreach($arr as $key=>$arrNew)  

{  

    if($arrNew[0]=='mike')  

    {  

        echo "mike exists\n"; 
        $arr[$key][1]++;  

    }  

}

print_r($arr);

echo '</pre>';

and that outputs

Array
(
[kent] => Array
(
[0] => mike
[1] => 2
[2] => red
)

)
mike exists
Array
(
[kent] => Array
(
[0] => mike
[1] => 3
[2] => red
)

)

I might have typed something wrong the first time as I've got code-blindness today