php) code inside if(empty($param1)){} still runs even $param1 is not empty

Question

I have been working on this problem for several hours but I couldn't figure out why empty() in if statement doesn't work as I expected.

fetch.php

    header('Content-Type: application/json');

function fetchApi($param1){
    $apiKey="SOME TEXT WHICH I WILL NOT POST HERE";
    $curl = curl_init();
    if(empty($param1)){       
        $body = json_decode(file_get_contents('php://input'), true);
        $bodyObject = (object) $body;
        if($bodyObject->target=="main"){
            $bodyObject->link = $bodyObject->link . "random?number=4".$apiKey;
            curl_setopt($curl, CURLOPT_URL, $bodyObject->link);
            curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
            $output = curl_exec($curl); 
            echo $output;
        }
    }else{
        echo $param1;
    }
    curl_close($curl);
}
fetchApi('');

this is my fetch.php code, I need to run fetchApi in two different situations. The first situation is when index.html is loaded. Javascript will automatically fetch to fetch.php and runs function fetchApi with empty string as parameter. Have tested hundreds time and it works fine.

But the problem is, I need to run this function in search.php too, when user searches something.

form in index.html

 <form action="search.php" method="GET">
     <label for="check">ingradients</label><input id="check"type="checkbox"/>
     <input type="text" name="search" placeholder="SEARCH"/>
 </form>

search.php

<!DOCTYPE html>
 <html lang="en">
 <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
 </head>
 <body>
  <?php 
    $searchId = $_GET["search"];
    include ('fetch.php');
    fetchApi($searchId);
   ?>
</body>
</html>

as you can see, in search.php I include fetch.php and calls function fetchApi with argument $_GET["search"] , but I get this error when I search something.

Notice: Undefined property: stdClass::$target in C:\xampp\htdocs\spoonacular\fetch.php on line 16

I can't understand why php shows such error. I passed an argument, it's not empty, why php still runs algorithms inside if(empty($param1)){}? I tried if($param1==''){} also but it doesn't work too.

How to do if I want totally ignore everything inside if(empty($param1)) if function parameter is not empty string or NULL?

You have fetchApi(''); in your file so it always calls itself additionally. — user3783243
– user3783243, Commented Mar 29, 2020 at 17:58
@user3783243 what can I do if I don't want to run algorithms inside first if statement from another php files? I have no ideas what to do if fetchApi(' ') runs too when I include the file.. — game lover
– game lover, Commented Mar 29, 2020 at 18:06
@user3783243 thank you for great comment.... your first comment helped me to solve my problem. Thank you. I placed fetchApi(' ') inside if(empty($_GET)) and it works great!! — game lover
– game lover, Commented Mar 29, 2020 at 18:20

game lover · Accepted Answer · 2020-03-29 18:26:02Z

1

Answering to my question myself. It had nothing to do with if(empty(....)) The reason why I got that error was

fetchApi('');

was always being called when I include fetch.php Thank you user3783243 for your comment.

And I solved this problem so

if(empty($_GET)){    
    fetchApi('');
}

fetchApi('') will only run when user hasn't made a GET request.

answered Mar 29, 2020 at 18:26

game lover

1222 silver badges8 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

php) code inside if(empty($param1)){} still runs even $param1 is not empty

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related