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<h1 class="refname">oci_new_connect</h1>
<p class="verinfo">(PHP 5, PECL OCI8 >= 1.1.0)</p><p class="refpurpose"><span class="refname">oci_new_connect</span> — <span class="dc-title">Connect to the Oracle server using a unique connection</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.oci-new-connect-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">resource</span> <span class="methodname"><strong>oci_new_connect</strong></span>
( <span class="methodparam"><span class="type">string</span> <code class="parameter">$username</code></span>
, <span class="methodparam"><span class="type">string</span> <code class="parameter">$password</code></span>
[, <span class="methodparam"><span class="type">string</span> <code class="parameter">$connection_string</code></span>
[, <span class="methodparam"><span class="type">string</span> <code class="parameter">$character_set</code></span>
[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$session_mode</code></span>
]]] )</div>
<p class="para rdfs-comment">
Establishes a new connection to an Oracle server and logs on.
</p>
<p class="para">
Unlike <span class="function"><a href="function.oci-connect.html" class="function">oci_connect()</a></span> and
<span class="function"><a href="function.oci-pconnect.html" class="function">oci_pconnect()</a></span>, <span class="function"><strong>oci_new_connect()</strong></span>
does not cache connections and will always return a brand-new freshly
opened connection handle. This is useful if your application needs
transactional isolation between two sets of queries.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.oci-new-connect-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">username</code></em></span>
<dd>
<p class="para">
The Oracle user name.
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">password</code></em></span>
<dd>
<p class="para">
The password for <em><code class="parameter">username</code></em>.
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">connection_string</code></em></span>
<dd>
<p class="para">Contains
the <em>Oracle instance</em> to connect to. It can be
an <a href="http://download.oracle.com/docs/cd/E11882_01/network.112/e10836/naming.htm" class="link external">» Easy Connect
string</a>, or a Connect Name from
the <var class="filename">tnsnames.ora</var> file, or the name of a local
Oracle instance.
</p>
<p class="para">If not specified, PHP uses
environment variables such as <strong><code>TWO_TASK</code></strong> (on Linux)
or <strong><code>LOCAL</code></strong> (on Windows)
and <strong><code>ORACLE_SID</code></strong> to determine the
<em>Oracle instance</em> to connect to.
</p>
<p class="para">
To use the Easy Connect naming method, PHP must be linked with Oracle
10<em class="emphasis">g</em> or greater Client libraries. The Easy Connect string for Oracle
10<em class="emphasis">g</em> is of the form:
<em class="emphasis">[//]host_name[:port][/service_name]</em>. From Oracle
11<em class="emphasis">g</em>, the syntax is:
<em class="emphasis">[//]host_name[:port][/service_name][:server_type][/instance_name]</em>.
Service names can be found by running the Oracle
utility <em>lsnrctl status</em> on the database server
machine.
</p>
<p class="para">
The <var class="filename">tnsnames.ora</var> file can be in the Oracle Net
search path, which
includes <var class="filename">$ORACLE_HOME/network/admin</var>
and <var class="filename">/etc</var>. Alternatively
set <em>TNS_ADMIN</em> so
that <var class="filename">$TNS_ADMIN/tnsnames.ora</var> is read. Make sure
the web daemon has read access to the file.
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">character_set</code></em></span>
<dd>
<p class="para">Determines
the character set used by the Oracle Client libraries. The character
set does not need to match the character set used by the database. If
it doesn't match, Oracle will do its best to convert data to and from
the database character set. Depending on the character sets this may
not give usable results. Conversion also adds some time overhead.
</p>
<p class="para">If not specified, the
Oracle Client libraries determine a character set from
the <strong><code>NLS_LANG</code></strong> environment variable.
</p>
<p class="para">Passing this parameter can
reduce the time taken to connect.
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">session_mode</code></em></span>
<dd>
<p class="para">This
parameter is available since version PHP 5 (PECL OCI8 1.1) and accepts the
following values: <strong><code>OCI_DEFAULT</code></strong>,
<strong><code>OCI_SYSOPER</code></strong> and <strong><code>OCI_SYSDBA</code></strong>.
If either <strong><code>OCI_SYSOPER</code></strong> or
<strong><code>OCI_SYSDBA</code></strong> were specified, this function will try
to establish privileged connection using external credentials.
Privileged connections are disabled by default. To enable them you
need to set <a href="oci8.configuration.html#ini.oci8.privileged-connect" class="link">oci8.privileged_connect</a>
to <em>On</em>.
</p>
<p class="para">
PHP 5.3 (PECL OCI8 1.3.4) introduced the
<strong><code>OCI_CRED_EXT</code></strong> mode value. This tells Oracle to use
External or OS authentication, which must be configured in the
database. The <strong><code>OCI_CRED_EXT</code></strong> flag can only be used
with username of "/" and a empty password.
<a href="oci8.configuration.html#ini.oci8.privileged-connect" class="link">oci8.privileged_connect</a>
may be <em>On</em> or <em>Off</em>.
</p>
<p class="para">
<strong><code>OCI_CRED_EXT</code></strong> may be combined with the
<strong><code>OCI_SYSOPER</code></strong> or
<strong><code>OCI_SYSDBA</code></strong> modes.
</p>
<p class="para">
<strong><code>OCI_CRED_EXT</code></strong> is not supported on Windows for
security reasons.
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.oci-new-connect-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns a connection identifier or <strong><code>FALSE</code></strong> on error.
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.oci-new-connect-examples">
<h3 class="title">Examples</h3>
<p class="para">
The following demonstrates how you can separate connections.
<div class="example" id="example-2006">
<p><strong>Example #1 <span class="function"><strong>oci_new_connect()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /><br /></span><span style="color: #FF8000">// create table mytab (mycol number);<br /><br /></span><span style="color: #007700">function </span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #0000BB">$name</span><span style="color: #007700">, </span><span style="color: #0000BB">$c</span><span style="color: #007700">)<br />{<br /> echo </span><span style="color: #DD0000">"Querying </span><span style="color: #0000BB">$name</span><span style="color: #DD0000">\n"</span><span style="color: #007700">;<br /> </span><span style="color: #0000BB">$s </span><span style="color: #007700">= </span><span style="color: #0000BB">oci_parse</span><span style="color: #007700">(</span><span style="color: #0000BB">$c</span><span style="color: #007700">, </span><span style="color: #DD0000">"select * from mytab"</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">oci_execute</span><span style="color: #007700">(</span><span style="color: #0000BB">$s</span><span style="color: #007700">, </span><span style="color: #0000BB">OCI_NO_AUTO_COMMIT</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">oci_fetch_array</span><span style="color: #007700">(</span><span style="color: #0000BB">$s</span><span style="color: #007700">, </span><span style="color: #0000BB">OCI_ASSOC</span><span style="color: #007700">);<br /> if (!</span><span style="color: #0000BB">$row</span><span style="color: #007700">) {<br /> echo </span><span style="color: #DD0000">"No rows\n"</span><span style="color: #007700">;<br /> } else {<br /> do {<br /> foreach (</span><span style="color: #0000BB">$row </span><span style="color: #007700">as </span><span style="color: #0000BB">$item</span><span style="color: #007700">)<br /> echo </span><span style="color: #0000BB">$item </span><span style="color: #007700">. </span><span style="color: #DD0000">" "</span><span style="color: #007700">;<br /> echo </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /> } while ((</span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">oci_fetch_array</span><span style="color: #007700">(</span><span style="color: #0000BB">$s</span><span style="color: #007700">, </span><span style="color: #0000BB">OCI_ASSOC</span><span style="color: #007700">)) != </span><span style="color: #0000BB">false</span><span style="color: #007700">);<br /> }<br />}<br /><br /></span><span style="color: #0000BB">$c1 </span><span style="color: #007700">= </span><span style="color: #0000BB">oci_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"hr"</span><span style="color: #007700">, </span><span style="color: #DD0000">"welcome"</span><span style="color: #007700">, </span><span style="color: #DD0000">"localhost/orcl"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$c2 </span><span style="color: #007700">= </span><span style="color: #0000BB">oci_new_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"hr"</span><span style="color: #007700">, </span><span style="color: #DD0000">"welcome"</span><span style="color: #007700">, </span><span style="color: #DD0000">"localhost/orcl"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$s </span><span style="color: #007700">= </span><span style="color: #0000BB">oci_parse</span><span style="color: #007700">(</span><span style="color: #0000BB">$c1</span><span style="color: #007700">, </span><span style="color: #DD0000">"insert into mytab values(1234)"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">oci_execute</span><span style="color: #007700">(</span><span style="color: #0000BB">$s</span><span style="color: #007700">, </span><span style="color: #0000BB">OCI_NO_AUTO_COMMIT</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"basic connection"</span><span style="color: #007700">, </span><span style="color: #0000BB">$c1</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"new connection"</span><span style="color: #007700">, </span><span style="color: #0000BB">$c2</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">oci_commit</span><span style="color: #007700">(</span><span style="color: #0000BB">$c1</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">query</span><span style="color: #007700">(</span><span style="color: #DD0000">"new connection after commit"</span><span style="color: #007700">, </span><span style="color: #0000BB">$c2</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Output is:<br />// Querying basic connection<br />// 1234 <br />// Querying new connection<br />// No rows<br />// Querying new connection after commit<br />// 1234 <br /><br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div>
</p>
<p class="para">
See <span class="function"><a href="function.oci-connect.html" class="function">oci_connect()</a></span> for further examples of parameter usage.
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.oci-new-connect-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.oci-connect.html" class="function" rel="rdfs-seeAlso">oci_connect()</a> - Connect to an Oracle database</span></li>
<li class="member"> <span class="function"><a href="function.oci-pconnect.html" class="function" rel="rdfs-seeAlso">oci_pconnect()</a> - Connect to an Oracle database using a persistent connection</span></li>
</ul>
</p>
</div>
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