PHP使用Stripos比较来自两个单独数组的字符串

Question

So I have two arrays that i need to loop through and compare strings. My question is what would be the best way to do this because when I use stripos() it fails (no matches found) but just using if($a1 == $a2){} it works fine.

So here's the code using stripos() :

foreach(array_combine($import_data['item_id'], $import_data['title']) as $item_id => $title) {
  foreach($unlinked as $product) {
    if(stripos($title, $product['title'] !== false)) {
      echo $product['title'] . '<br>';
      echo $item_id . ' - ' . $product['product_id'] . '<br>';
    }
  }
}

But changing the if statement to

if($product['title'] == $title) {}

It then works fine. So, is it OK to compare strings using this method or is there a more accurate way of comparing strings in PHP.

Answer 1

Check if the result is zero OR false. It's not the same thing. Zero means "I've found it at location zero".