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POPHP best approach where to store MySQL queries when using MySQLi
 

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  1. POPHP best approach where to store MySQL queries when using MySQLi
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    <p>I am new to <strong>MySQLi</strong> and I am not an expert at PHP. I am now moving over to use <strong>MySQLi</strong> instead of the <strong>MySQL</strong> function in PHP.</p> <p>I would appreciate a little help in understanding what is the <strong>best approach</strong>, yet easy to handle, when I code my PHP scripts and need to query my MySQL database when using <strong>MySQLi</strong>.</p> <p>When using <strong>MySQL</strong> function in PHP I often did it this way:</p> <p><strong>PHP Script</strong></p> <pre><code>// My PHP Script include("includes/dbc.php"); // Include script with the database connection string </code></pre> <p>The <strong>dbc.php</strong> script would look like:</p> <pre><code>&lt;?php $mySqlServer = "localhost"; $mySqlUser = "username"; $mySqlpwd = "password"; $mySqlDB = "database"; if ( !mysql_connect($mySqlServer, $mySqlUser, $mySqlpwd) ) { $_SESSION["dberror"] = "Not able to connect to database SERVER."; } if ( !mysql_select_db( $mySqlDB ) ) { $_SESSION["dberror"] = "Not able to select database."; } </code></pre> <p>Then in the scripts where I would <strong>query</strong> and <strong>echo</strong> results I actually called a <strong>function</strong> which I stored in a <strong>func.php</strong> script.</p> <p><strong>func.php</strong> script:</p> <pre><code>function getPeople($id) { $sql = "SELECT * FROM table WHERE hid = '$id'"; $sqlResult = mysql_query($sql) or die(mysql_error()); return $sqlResult; } </code></pre> <p>In the script that echoed the data it could look like:</p> <pre><code>$data = getPeople($id); while ($row = mysql_fetch_assoc($data)) { echo "Firstname: " . $row['firstname']; } </code></pre> <p><strong>Would the above be the same structure although I would use <em>MySQLi</em> now?</strong></p> <p><strong>This is how I now have edited my PHP script files with <em>MySQLi</em> instead.</strong></p> <p>The <strong>dbc.php</strong> now contains</p> <pre><code>// Create the object $conn = new mysqli($DBServer, $DBUser, $DBPass, $DBName); // Check if able to connect to database if ($conn-&gt;connect_error) { trigger_error('Database connection failed: ' . $conn-&gt;connect_error, E_USER_ERROR); } </code></pre> <p>The *<em>function.php</em> file contains</p> <pre><code>function getFewEventDetails() { $sql = "SELECT * FROM iboevents WHERE visible = '1' LIMIT 1"; $rs = $conn-&gt;query($sql); if($rs === false) { trigger_error('Wrong SQL: ' . $sql . ' Error: ' . $conn-&gt;error, E_USER_ERROR); } else { $returned_rows = $rs-&gt;num_rows; return $returned_rows; } } </code></pre> <p>But when I call this function to produce the results in another script file, nothing happens.</p>
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    1. USAndreas
    1. USAndreas
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    1. COOn the *basic* surface, there isn't much difference between mysql and mysqli, so your existing structure should be fine. http://stackoverflow.com/questions/548986/mysql-vs-mysqli-in-php will help. I'd also consider [PDO](http://php.net/pdo).
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      1. POPHP best approach where to store MySQL queries when using MySQLi
      1. USzamnuts
    2. COAgree with @zamnuts. The main difference is that all the mysqli functions require you to supply a connection or statement argument, so you'll need to pass that as an argument to your functions.
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      1. POPHP best approach where to store MySQL queries when using MySQLi
      1. USBarmar
    3. CO@zamnuts Thank you. Why would you recommend me considering PDO?
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      1. USAndreas
 

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