在foreach循环PHP中更改变量的值

Question

I have a problem. I should change the value of a variable inside a foreach loop in php, but the value holds predefined value all the time. Here is the code:

$returnValue = "";
foreach($vinArray as $vinValue){
    $sql_vin_check = "SELECT * FROM users WHERE vin LIKE '%:vin%'";
    $stmtvincheck  = $pdo->prepare($sql_vin_check);
    $stmtvincheck->bindParam(':vin', $vinValue);
    $stmtvincheck->execute();
    $vinCheck = $stmtvincheck->rowCount();
    $stmtvincheck->closeCursor();
    echo $vinValue;
    if($vinCheck != 0){
        $returnValue = $vinValue; break;
    }
}
return $returnValue;

And $returnValue holds the "" value. I tried echoing $vinValue variable and it's not empty when the loop breaks.

What am I doing wrong?

Answer 1

try this instead :

$returnValue = "";
foreach($vinArray as $k=>$vinValue){
    $sql_vin_check = "SELECT count(*) c FROM users WHERE vin LIKE '%:vin%'";
    $stmtvincheck  = $pdo->prepare($sql_vin_check);
    $stmtvincheck->bindParam(':vin', $vinValue);
    $stmtvincheck->execute();
    $vinCheck = $stmtvincheck->fetch();
    $stmtvincheck->closeCursor();
    if($vinCheck['c'] > 0){
        $returnValue = $vinValue; 
        break;
    }
}
return $returnValue;

i'd also suggest you replace the returnvalue/break with a direct return from there if nothing else is expected (this suggestion have nothing to do with your problem)