for loops with explode()

anthill

I've never been much good at grasping for(), foreach() and while() and i'm having yet another problem.

Lets say I have a string that reads:

$string = "1=red,3=blue,9=yellow";

I want to split that string twice using explode. Once to get rid of the commas, and secondly the equals. Here is my code so far:


$foo = explode(",", $string); //create array stripping the commas

$val = count($foo); //count the contents in array (in this case 3)

for($count=0; $count<$val; $count++)
   {
   $list =  explode("=", $equip['$count']); //create array stripping out equals for each of the contents in the array

   echo "number:".$list['0']." details:".$list['1']."<br>"; //display the result
   }

so it should print:

number: 1 details: red
number: 2 details: blue
number: 3 details: yellow

But i don't get anyting, and i just can't get my head round why. Can anyone help?

Thanks

Ant

number:

TheDefender

You have the concept of the for loop down pretty well; It's the array thing that's kicking your butt.

With what you are doing, you are creating a single string with just the last value in the for loop. You need to define the array (optional) and then load it with the values by using the square brackets.

$list = array();
for($count=0; $count<$val; $count++) 
   { 
   $list[] =  explode("=", $equip[$count]); //create array stripping out equals for each of the contents in the array 

   echo "number:".$list[0]." details:".$list[1]."<br />"; //You don't need to quote your indexes in this case, since you are pulling the associated numeric index and not a named index value.
   }

anthill

Thanks for your reply, very much appreciated. Only I'm getting the results returned as:

number:Array details:
number:Array details:Array
number:Array details:Array

using the code:

$string = "1=red,3=blue,9=yellow"; 

$foo = explode(",", $string); //create array stripping the commas 

$val = count($foo); //count the contents in array (in this case 3) 

$list = array(); 

for($count=0; $count<$val; $count++)  

   {  

   $list[] =  explode("=", $foo[$count]); //create array stripping out equals for each of the contents in the array 

   echo "number:".$list[0]." details:".$list[1]."<br />"; //You don't need to quote your indexes in this case, since you are pulling the associated numeric index and not a named index value. 
   }

my apologies if i haven't used your code correctly, i can't be far away now 🙂

Ant

anthill

I've just used this code:



$string = "1=red,3=blue,9=yellow"; 

$foo = explode(",", $string); //create array stripping the commas 

$val = count($foo); //count the contents in array (in this case 3) 

for($count=0; $count<$val; $count++)  

   {  

   $list =  explode("=", $foo[$count]);

   echo "number:".$list[0]." details:".$list[1]."<br />";
   }

and I got:

number:1 details:red
number:3 details:blue
number:9 details:yellow

Now i'm confused! Was it just the fact I was using quotes?

TheDefender

Yep, that was the problem... Notice in my code, I didn't have quoes around the $count index either. (I just didn't emphasize it when I originally posted. My bad)