call to undefined function execute() - php

Question

bellow is my code.Error shown is like
fatal error: call to undefined function execute() on line 21,
how could i solve this problem?
<?php
include 'config/dbconfig.php';
include 'lib/function.php';
include 'helper/helper.php';
$db = new rootfunc();
$fm = new formate();
if(!empty($_POST['name']) or !empty($_POST['email']) or !empty($_POST['password1']) or !empty($_POST['dob']) or !empty($_POST['gender']) ){
$name = $fm->validation($_POST['name']);
$email = $fm->validation($_POST['email']);
$password = $fm->validation($_POST['password1']);
$dob = $_POST['dob'];
$gender = $fm->validation($_POST['gender']);
$query = $pdo->prepare("SELECT * FROM user_table WHERE name = ? AND email = ?");
$query = execute(array($name,$email));
$numRow = $query->rowCount();
if(!$numRow){
$query = "INSERT INTO user_table (name,email,password,dob,gender) VALUES (?,?,?,?,?)";
$query = $pdo->prepare($query);
$query->execute(array($name,$email,$password,$dob,$gender));
echo "Congrates, please login..";
}else{
echo "name and email exist..";
}
}
?>

Answer 1

In both cases you are overwriting $query:
$query = "INSERT INTO user_table (name,email,password,dob,gender) VALUES (?,?,?,?,?)";
$query = $pdo->prepare($query);
You need to give the execution a different variable to hold the object, for example:
$query = "INSERT INTO user_table (name,email,password,dob,gender) VALUES (?,?,?,?,?)";
$result = $pdo->prepare($query);
$result->execute(array($name,$email,$password,$dob,$gender));
In addition you should allow users to use the passwords / phrases they desire. Don't limit passwords.
While you're working with passwords never store them as plain text! Please use PHP's built-in functions to handle password security. If you're using a PHP version less than 5.5 you can use the password_hash() compatibility pack. Make sure that you don't escape passwords or use any other cleansing mechanism on them before hashing. Doing so changes the password and causes unnecessary additional coding.
I also noticed this in your code
$numRow = $query->rowCount();
Since the query is a SELECT query it will not work with rowCount()
From the docs:
PDOStatement::rowCount() returns the number of rows affected by the last DELETE, INSERT, or UPDATE statement executed by the corresponding PDOStatement object.
For SELECT when you are not doing a COUNT() query you can return the number of rows like this after you execute the query;
$rows = $result->fetchAll();
$num_rows = count($rows);
In your case it is not necessary to check the count though - just check to make sure the query executed which is enough to get into your conditional statements.