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File: demo2-simpledboperations.php

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  Classes of Bob Gombocki  >  PersistClass  >  demo2-simpledboperations.php  >  Download  
File: demo2-simpledboperations.php
Role: Example script
Content type: text/plain
Description: Executing DB queries
Class: PersistClass
DB access wrapper & storing objects in DB tables
Author: By
Last change: added web tutorial info
Date: 5 years ago
Size: 1,790 bytes
 

Contents

Class file image Download
<?php

/*    
    http://coolpenguin.net/persistclass 
    for updates, documentation, tutorials
*/


// connect to database (executing demo 1)
require('demo1-connection.php');

// get connection object
$con DbConnectionPool::instance()->getConnection();

// execute an insert
$sql 'INSERT INTO TESTTABLE(testcolumn) VALUES("INSERTSUCCESS")';
$con->query($sql);

// execute an update, retrieving number of updated rows 
$sql 'UPDATE TESTTABLE SET testcolumn = "UPDATESUCCESS"';
$modifiedRows $con->query($sql);
// or $con->getRowsNum()

// perform select, iterating result
$sql 'SELECT testcolumn FROM TESTTABLE';
$con->query($sql);
while(
$row $con->next()) {
    
$testColumn $row['testcolumn'];
}

// putting the result rows into an array
$sql 'SELECT testcolumn FROM TESTTABLE';
$rows $con->queryResultArr($sql);

// selecting a single row
$sql 'SELECT testcolumn FROM TESTTABLE';
$row $con->queryFirstRow($sql);

// selecting the first column of the first row
$sql 'SELECT count(*) FROM TESTTABLE';
$count $con->queryFirstRowCol($sql);

// selecting  an array containing all rows first columns
$sql 'SELECT TESTID from TESTTABLE';
$ids $con->queryFirstColumnSet($sql);

// retrieving the total number of rows returned
$sql 'SELECT testcolumn FROM TESTTABLE';
$con->query($sql);
$resultCount $con->getRowsNum();

// retrieving ID of last inserted row
$sql 'INSERT INTO TESTTABLE(testcolumn) VALUES("INSERTSUCCESS")';
$con->query($sql);
$lastId $con->getLastId();

// escaping database input
$dangerousData '"; DROP TABLES';
$sql 'INSERT INTO TESTTABLE(testcolumn) VALUES('$con->escape($dangerousData) .')';

// retrieving database link
$dbLink $con->getLink();

echo 
'Test successful';

?>