如何仅在PHP中获取第一行的特定列数据SQL？

Question

I'm using PHP to echo out some records in SQL database. This seems easy but I can't get it. So basically, I want to get all the columns a,b,c,d,e for the first row only and just a,b,c for the rest of the rows.

$query = $assdb->prepare("Select a, b, c, d, e from Table");
$query->execute();
$stmt = $query->fetchAll(PDO::FETCH_ASSOC);

foreach($stmt as $row){
echo $row['a'] . $row['b']  . $row['c'];

//IF FIRST ROW, THEN ECHO $row['d'] and $row['e'], BUT IT DOES NOT WORK
if($row == 1){
    echo $row['d'] and $row['e']; 
  }

}//END FOREACH LOOP

HOW DO I CHECK FOR FIRST ROW? AND THEN ADD SPECIFIC DATA TO IT?

Answer 1

Use simple flag $is_first :

$is_first = true;
foreach ($stmt as $row){
    echo $row['a'] . $row['b']  . $row['c'];

    //IF FIRST ROW, THEN ECHO $row['d'] and $row['e']
    if ($is_first) {
       echo $row['d'] . $row['e']; 
       $is_first = false;
    }
} //END FOREACH LOOP

Else you can use foreach like

foreach ($stmt as $key => $row) {
    echo $row['a'] . $row['b']  . $row['c'];
    if ($key == 0) {
        echo $row['d'] . $row['e']; 
    }
}

and if you $stmt is zero-indexed array check if $key == 0 .