Executing pre-build-up array with PDO Execute - php

Question

I am trying to pass through any query to a function using PDO.
I have build up the array through a loop function and try to insert it into the execute(array(....)) function, but it's not getting through.
FUNCTION CODE
public function ShowData($sql,$variable)
{
$execute_string = "";
echo "<pre>";
print_r($variable);
echo "</pre>";
$q = $this->conn->prepare($sql);
for($i = 0; $i < sizeof($variable); $i++)
{
if($i != 0) $execute_string .= ",";
$placeholder = $i + 1;
$execute_string .= "':$placeholder' => '".$variable[$i]."'";
}
echo $sql."<br>";
echo $execute_string;
$q->execute(array($execute_string));
echo "<br>Execute Succeeded";
return $row = $q->fetchAll();
}
VIEWPAGE CODE
$author = "Nemoza";
$name = "MBICO_mailer";
$project = $data->ShowData("SELECT * FROM mbico_projects WHERE author=:1 AND name=:2", array($author,$name));
OUTPUT FROM FUNCTION W/ DEBUGGING
Array
(
[0] => Nemoza
[1] => MBICO_mailer
)
SELECT * FROM mbico_projects WHERE author=:1 AND name=:2
':1' => 'Nemoza',':2' => 'MBICO_mailer'
However, the 'Execute Succeeded' text is not being printed, and the execute(array...)) is not actually executing.
What am I doing wrong, and how else should I do it?

Answer 1

here's an example you can use:
public function ShowData($sql,$variable) {
$bind = [];
foreach ($variable as $key => $value) {
$ph = $key+1;
$bind[":" . $ph] = $value;
}
$stmt = $this->conn->prepare($sql);
$stmt->execute($bind);
return $stmt->fetchAll();
}
it's used like this:
$sql = 'select * from users where username = :1 or username = :2';
$bind = ['123', '456'];
$db->ShowData($sql, $bind);
as mentioned in the comments to your question, you need to send an array to execute() function, and not a string.

Answer 2

Managed to do it like this:
public function ShowData($sql,$variable)
{
$execute_string = array();
$q = $this->conn->prepare($sql);
foreach($variable as $item)
{
$execute_string[] = $item;
}
$q->execute($execute_string);
return $q->fetchAll();
}
$project = $data->ShowData("SELECT * FROM mbico_projects WHERE author=? AND title=?", array($author, $title));