View and modify items in the database with php

The mysql_* functions are obsolete and have been removed in PHP 7, but mysqli_ * are similar, I will show an example with mysqli ...

Connection :

//inicia uma conexão com o banco, note que aqui ja é selecionado o banco de dados
$con = new mysqli("server", "user", "pass", "db_name");

//Caso algum erro ocorra mostra o erro
if(mysqli_connect_errno()) trigger_error(mysqli_connect_error());

Standard STMT Query :

//Prepara o SQL
$stmt = $con->prepare("SELECT * FROM site");

//Executa o SQL
$stmt->execute();

//Obtem o resultado do SQL
$res = $stmt->get_result();

To show SQL has several forms ...

fetch_all - Save the result in an array in another array:

$array = $res->fetch_all();
echo $array[x][y];

x - query row

y - query column

fetch_row - Save a line in an array, a loop is usually used to fetch all lines:

while($array = $res->fetch_row()) {
    echo "$array[0], $array[1], $array[2]<br>";
}

Show all names, adscode and id, <br> is just for better viewing

fetch_assoc - Works the same way that the fetch_row , however instead of taking the position of the array, is caught by the name denominated by the bank:

while($array = $res->fetch_row()) {
    echo $array["titulo"]." (".$array["id"].") - ".$array["adscode"]."<br>"
}

No fetch_assoc does not have to be used in the order of the columns of the bank, but does not use interpolation (variable in the middle of the string, "texto $variavel mais texto" ), causes error

fetch_array - Saves the data in an array can be used both $array["coluna"] and $array[x] :

while($array = $res->fetch_array()) {
    echo $array["titulo"]." (".$array["id"].") - $array[2]<br>";
}

In%% can be used interpolation in numbers

fetch_array - Returns an object with the data:

while($array = $res->fetch_object()) {
    echo "$array->titulo ($array->id) - $array->adscode<br>";
}

No fetch_object can use interpolation quietly

You can create a php file with the code below:

<?php 

include("conexaoMysql.php");

class Result{
    public $titulo;
    public $adscode;

}

function getResultado($conn){
    $sqlf = "
        SELECT titulo,adscode FROM tabela
    ";

    $stmt = $conn->prepare($sqlf);
    $stmt->execute();
    $stmt->bind_result($titulo, $anuncio);

    while(($stmt->fetch()) ){
        $result = new Result();

        $result->numero = $titulo;
        $result->data = $anuncio;

        $listaResult[] = $result;
    }

    return $listaResult;
}   

try{
    $listaResult = getResultado($conn);  
}catch (Exception $e){
    $msgErro = $e->getMessage();
}
?>

If it is more than one row of records, I created the variable $ listResult to store all the records.

This line: "include (" connectionMysql.php "); I have created a file with the database connection data, I created it just to make it easier, but it would be something like this if you are using SQL:

<?php
$HOST = "";
$USER = "";
$PASSWORD = "";
$DATABASE = "";

$conn = new mysqli($HOST, $USER, $PASSWORD, $DATABASE);

if ($conn->connect_error)
    throw new Exception('Falha na conexão com o MySQL: ' . $conn->connect_error);
?>