Comprehensively learn PHP PDO installation and use_PHP tutorial
With the rapid development of PHP, its functions are becoming more and more powerful. PDO (PHP Data Object) is a new thing in PHP 5. When PHP 6 is about to be released, PHP 6 will only use it by default. PDO handles databases and will move all database extensions to PECL. Then by default, our favorite php_mysql.dll will no longer exist. So what should we do? We can only keep pace with the times, so I gave it a try. Put PDO. (This article is only entry-level, experts can skip it, haha)
What is PHP PDO?
Installing PHP PDO
I am on Windows XP SP2, so the whole process is done on Windows. As for Linux/FreeBSD and other platforms, Please find the information and set up the installation by yourself.
Mine is PHP 5.1.4, which already comes with the php_pdo.dll extension, but it requires a little setup before it can be used.
Open c:windowsphp.ini, which is my PHP configuration file. Find the following line:
<ol class="dp-xml"><li class="alt"><span><span>extension_dir </span></span></li></ol>
This is the directory where our extension exists. My PHP 5 extension is in :C:php5ext, then I will change this line to:
<ol class="dp-xml"><li class="alt"><span><span class="attribute"><font color="#ff0000">extension_dir</font></span><span> = </span><span class="attribute-value"><font color="#0000ff">"C:/php5/ext"</font></span><span> </span></span></li></ol>
Then go to php.ini and find:
<ol class="dp-xml"><li class="alt"><span><span>Dynamic Extensions ; </span></span></li></ol>
There are a bunch of similar;extension below =php_mbstring.dll, here is the configuration of PHP extension loading, we will add our PDO extension at the end:
<ol class="dp-xml"> <li class="alt"><span><span class="attribute"><font color="#ff0000">extension</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">php_pdo</font></span><span>.dll </span></span></li> <li class=""> <span></span><span class="attribute"><font color="#ff0000">extension</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">php_pdo_mysql</font></span><span>.dll </span> </li> <li class="alt"> <span></span><span class="attribute"><font color="#ff0000">extension</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">php_pdo_pgsql</font></span><span>.dll </span> </li> <li class=""> <span></span><span class="attribute"><font color="#ff0000">extension</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">php_pdo_sqlite</font></span><span>.dll </span> </li> <li class="alt"> <span></span><span class="attribute"><font color="#ff0000">extension</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">php_pdo_mssql</font></span><span>.dll </span> </li> <li class=""> <span></span><span class="attribute"><font color="#ff0000">extension</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">php_pdo_odbc</font></span><span>.dll </span> </li> <li class="alt"> <span></span><span class="attribute"><font color="#ff0000">extension</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">php_pdo_firebird</font></span><span>.dll </span> </li> <li class=""> <span>;</span><span class="attribute"><font color="#ff0000">extension</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">php_pdo_oci8</font></span><span>.dll </span> </li> </ol>
Various PHP PDO drivers, all that can be added are provided In addition, the following php_pdo_oci8.dll, because I have not installed the Oralce database, does not have this, so I use a semicolon to comment it out. Then restart our web server, IIS/Apache, mine is IIS, hey, you look down on me, on Windows, it’s easy.
After restarting, write a phpinfo.php file in the document directory of our web server, add these:
<ol class="dp-xml"> <li class="alt"><span><span><? </span></span></li> <li class=""><span>phpinfo(); </span></li> <li class="alt"><span>?> </span></li> </ol>
Then open our lovely browser: IE/FireFox, Mine is FireFox 2.0, I just downloaded it, it’s great, I’m not afraid of rogue software, haha. Enter: http://localhost/phpinfo.php in the browser. If your path to this page is inconsistent, please enter it yourself. In the output content, if you can successfully see:
<ol class="dp-xml"> <li class="alt"><span><span>PDO </span></span></li> <li class=""><span>PDO support enabled </span></li> <li class="alt"><span>PDO drivers mysql, pgsql, sqlite, mssql, odbc, firebird </span></li> </ol>
followed by various driver instructions: PDO_Firebird, pdo_mssql, pdo_mysql, PDO_ODBC, pdo_pgsql, pdo_sqlite, then congratulations on your successful installation, otherwise Please check the steps above carefully

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