Remove a value from an array without popping

[freelance84]

 

Just a quick one, new area for me.

 

I have an array which is looped against another array, if the two values from each ever match then an event occurs, if not then something else.

 

If a match does occur i then want to remove the said value from one of the arrays... is this really all i need to do, seems too simple:

 

unset($saved_dont_use[$j]);

[Andy-H]

//get unique array values
$diff = array_diff($arr1, $arr2);

if (!empty($diff))
{
   //event trigger

   unset($arr1);
   //all unique values stored in $diff, $arr2 keeps all values.
}
else
{
   //event trigger
}

 

Will that do or do you need to trigger an event for each value matched?

 

foreach($arr1 as $k => $v)
{
   if ( in_array($arr1[$k], $arr2) )
   {
      //values matched, trigger event
      unset($arr1[$k]);
      // $arr1 contains unique values, $arr2 remains the same.
   }
   else
   {
      // no values matched, trigger other event.
   }
}

[freelance84]

Yea thanks, I think the second method you posted will work. Is it not really a good idea to remove a value from an array with just the unset function?

[freelance84]

Thanks Andy-H,

 

using "in_array" works like a charm. That's one more function learnt