Have been scratching my head for a few hours on this, seems like a silly issue, but just can't find a solution.
Here's my sample code:
$continueLoop = true;
$colorsArray = array("red", "white", "blue");
while($continueLoop == true) {
$arrayCount = count($colorsArray);
for ($i=0; $i < $arrayCount; $i++) {
echo "evaluating ".$colorsArray[$i]."<br>";
if($colorsArray[$i] == "blue") {
array_push($colorsArray, "YELLOW");
break;
}
}
if(count($colorsArray) == 4) {
$continueLoop = false;
}
}
It outputs
red
white
blue
Basically I am adding a color "YELLOW" and then it should walk through the whole array again. But it's ignoring the newly added array item.
I know it does recognize the item, because the while loop will keep running until $colorsArray has 4 items (in the beginning it has only 3).
So why is it not Echo'ing "YELLOW"?
I've tried a few different solutions, just pushing the item using $array[], using foreach, array_values etc. etc.
Thank you
Update:
If i put
if(count($colorsArray) == 10) {
Still still won't print Yellow
Will probably clean this up in a moment but just quickly this should do the job;
$colorsArray = array("red", "white", "blue");
for ($i=0; $i < count($colorsArray); $i++) {
echo "evaluating ".$colorsArray[$i]."<br>";
if($colorsArray[$i] == "blue" && !in_array('YELLOW', $colorsArray)) {
array_push($colorsArray, "YELLOW");
}
}
print_r($colorsArray);
Essentially you use count on each iteration, since the length of the array changes, it now has another element to loop through.
Edit: If you want it to walk through the whole array again, just set $i = -1; after you push in a new element.
Edit2: A little clean up.
$colours = array('red', 'white', 'blue');
for ($i = 0; $i < count($colours); ++$i) {
echo 'Evaluating: ' . $colours[$i] . '<br/>';
if ($colours[$i] === 'blue' && !in_array('Yellow', $colours)) {
array_push($colours, 'Yellow');
$i = -1;
}
}
Output:
Evaluating: red
Evaluating: white
Evaluating: blue
Evaluating: red
Evaluating: white
Evaluating: blue
Evaluating: Yellow
0 rather than -1 then you skip the first loop iteration, i.e. you miss out red.