PHP- PDO get metadata from database - metadata

Question

I want to get the metadata from a database with a table 'friends'
id name
1 Herbert
2 LG
3 Levins
Here is the code I was trying to get the data.
<?php
$dsn = 'mysql:host=localhost;dbname=postgre';
$username = 'root';
$password = '';
$options = array(
PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8',
);
$db = new PDO($dsn, $username, $password, $options);
$stmt = $db->query("SELECT * FROM friends");
$cnt_columns = $stmt->columnCount();
for($i = 0; $i < $cnt_columns; $i++) {
$metadata = $stmt->getColumnMeta($i);
var_dump($metadata);
}
?>
When I execute the code:, it displays
array
'native_type' => string 'LONG' (length=4)
'pdo_type' => int 2
'flags' =>
array
empty
'table' => string 'friends' (length=7)
'name' => string 'id' (length=2)
'len' => int 11
'precision' => int 0
array
'native_type' => string 'VAR_STRING' (length=10)
'pdo_type' => int 2
'flags' =>
array
empty
'table' => string 'friends' (length=7)
'name' => string 'name' (length=4)
'len' => int 60
'precision' => int 0
Till here, it is giving the correct count of rows, but I need the result to display as it looks in the my database like
Output:
id name
1 Hebert
2 LG
3 Levins
How could I get all my fields as it is like a table in my database using metadata.

Answer 1

Use columnCount.
$stmt = $db->query("SELECT * FROM friends");
$cnt_columns = $stmt->columnCount();
for($i = 0; $i < $cnt_columns; $i++) {
$metadata = $stmt->getColumnMeta($i);
var_dump($metadata);
}
By the way, getColumnMeta is experimental. Not recommended to use. Why do you want to use it?
For the desired output, you don't need metadata. Just loop through the results:
$sql = "SELECT * FROM friends";
$stmt = $db->prepare($sql);
$stmt->execute();
$result = $stmt->fetchAll();
// field names
if(count($result) > 0) {
foreach($result[0] as $k => $v) {
if(!is_int($k)) {
echo $k . "\t";
}
}
}
echo PHP_EOL;
// data
foreach ($result as $row) {
foreach($row as $k => $v) {
if(!is_int($k)) {
echo $row[$k] . "\t";
}
}
echo PHP_EOL;
}