assign variable if condition match in for loop - php

Question

Suppose I have an array with ie. $user_all_activity in code, i must check 5 activity in 10 minute(which is done by getDifference(),which return true is condition matches).If condition matched the condition,now i must check 5 activity in 10 minute after the condition matched.And this will be repeated several times.I put some late night programming here.
//$$user_all_activity take all activity of user A
if(!$user_all_activity == NULL)
{
$size = sizeof($user_all_activity);
//$prev_array = array();
for( $i=0; $i<$size-1;$i++)
{
if($i>3)
{
$prev_array = $user_all_activity[$i-4];
$current_array = $user_all_activity[$i];
//get difference check for difference 10
if($this->getDifference($current_array,$prev_array))
{
echo "Table update at id ".$current_array['id']." </br>";
}
}
}
}
The problem for me when condition matched.I must check again the same thing.May be good to use recursive.Sorry for not explaining the problem before.Hope you get the question.Thanks

Answer 1

Set a variable, and then check it later.
if($user_all_activity != NULL)
{
$size = sizeof($user_all_activity);
$difference_found = false;
for( $i=0; $i<$size-1;$i++)
{
if($i>3)
{
$prev_array = $user_all_activity[$i-4];
$current_array = $user_all_activity[$i];
//get difference check for difference 10
if($this->getDifference($current_array,$prev_array))
{
echo "Table update at id ".$current_array['id']." </br>";
$difference_found = true;
}
if ($difference_found) {
// do something
}
}
}
}