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Added information about each drivers DSN

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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@180159 c90b9560-bf6c-de11-be94-00142212c4b1
This commit is contained in:
Aidan Lister 2005-02-20 05:37:59 +00:00
parent af56b760ee
commit 6fc54cd618
1 changed files with 98 additions and 25 deletions
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123
reference/pdo/functions/PDO-construct.xml
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@ -1,5 +1,5 @@
<?xml version='1.0' encoding='iso-8859-1'?>
<!-- $Revision: 1.9 $ -->
<!-- $Revision: 1.10 $ -->
<refentry id="function.PDO-construct">
<refnamediv>
<refname>PDO::__construct</refname>
@ -28,20 +28,90 @@
<variablelist>
<varlistentry><term>dsn</term>
<listitem>
<para>
The Data Source Name, or DSN, contains the information required to
connect to the database.
</para>
<para>
In general, a DSN consists of the PDO driver name, followed by a colon,
followed by the PDO driver-specific connection syntax. Examples of each
driver are given below:
</para>
<para>
<variablelist>
<varlistentry>
<term><constant>PDO_DBLIB</constant></term>
<listitem>
<para>
The DSN prefix is either <userinput>sybase:</userinput>
or <userinput>mssql:</userinput> depending on which libraries
it was linked against during compilation.
</para>
<para><userinput>sybase:host=localhost; dbname=testdb</userinput></para>
<para><userinput>mssql:host=localhost; dbname=testdb</userinput></para>
</listitem>
</varlistentry>
<varlistentry>
<term><constant>PDO_FIREBIRD</constant></term>
<listitem>
<para><userinput>firebird:User=john;Password=mypass;Database=DATABASE.GDE;DataSource=localhost;Port=3050</userinput></para>
</listitem>
</varlistentry>
<varlistentry>
<term><constant>PDO_MYSQL</constant></term>
<listitem>
<para><userinput>mysql:host=localhost;dbname=testdb</userinput></para>
</listitem>
</varlistentry>
<varlistentry>
<term><constant>PDO_OCI</constant></term>
<listitem>
<para>To connect via <filename>tnsnames.ora</filename>, use:</para>
<para><userinput>oci:mydb</userinput></para>
<para>If using instantclient, use:</para>
<para><userinput>oci:dbname=//localhost:1521/testdb</userinput></para>
</listitem>
</varlistentry>
<varlistentry>
<term><constant>PDO_ODBC</constant></term>
<listitem>
<para><userinput>odbc:DSN=SAMPLE;UID=john;PWD=mypass</userinput></para>
<para>DSN=SAMPLE refers to the SAMPLE data source configured in the ODBC driver manager.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><constant>PDO_PGSQL</constant></term>
<listitem>
<para><userinput>pgsql:host=localhost port=5432 dbname=testdb user=john password=mypass</userinput></para>
<para>
Note, by passing <varname>user</varname> and <varname>password</varname>
in the DSN, the <parameter>username</parameter>
and <parameter>password</parameter> parameters become optional.
If specified, they are glued to the end of the connection string.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><constant>PDO_SQLITE</constant></term>
<listitem>
<para><userinput>sqlite:/path/to/database</userinput></para>
<para>To create a database in memory, use:</para>
<para><userinput>sqlite::memory:</userinput></para>
</listitem>
</varlistentry>
</variablelist>
</para>
<para>
The <parameter>dsn</parameter> parameter supports three
different methods of specifying the arguments required to create
a database connection:
</para>
<para>
<variablelist>
<varlistentry><term>Driver invocation</term>
<listitem>
<para>
<parameter>dsn</parameter> consists of the PDO driver name, followed
by a colon, followed by the PDO driver-specific connection syntax.
For example, <userinput>'odbc:DSN=SAMPLE;UID=db2inst1;PWD=ibmdb2'</userinput>
would create a PDO_ODBC connection to an ODBC database, while
<userinput>'mysql:host=127.0.0.1;dbname=testdb'</userinput> would create
a PDO_MYSQL connection to a MySQL database.
<parameter>dsn</parameter> contains the full DSN.
</para>
</listitem>
</varlistentry>
@ -52,6 +122,7 @@
followed by a URI that defines the location of a file containing
the DSN string. The URI can specify a local file or a remote URL.
</para>
<para><userinput>uri:file:///path/to/dsnfile</userinput></para>
</listitem>
</varlistentry>
<varlistentry><term>Aliasing</term>
@ -60,8 +131,7 @@
<parameter>dsn</parameter> consists of a name
<parameter>name</parameter> that maps to
<literal>pdo.dsn.<parameter>name</parameter></literal> in &php.ini;
defining the DSN string. <parameter>name</parameter> can not contain
a colon.
defining the DSN string.
</para>
</listitem>
</varlistentry>
@ -118,17 +188,17 @@
<programlisting role="php">
<![CDATA[
<?php
/* Connect to an ODBC database using driver invocation */
// Connect to an ODBC database using driver invocation
$dsn = 'mysql:dbname=testdb;host=127.0.0.1';
$user = 'dbuser';
$password = 'dbpass';
try {
$dbh = new PDO($dsn, $user, $password);
}
catch (PDOException $e) {
} catch (PDOException $e) {
echo 'Connection failed: ' . $e->getMessage();
}
?>
]]>
</programlisting>
@ -140,11 +210,11 @@ catch (PDOException $e) {
that enable PHP to read the file. The file contains the PDO DSN to
connect to a DB2 database through the PDO_ODBC driver:
</para>
<programlisting>
<screen>
<![CDATA[
odbc:DSN=SAMPLE;UID=db2inst1;PWD=password
odbc:DSN=SAMPLE;UID=john;PWD=mypass
]]>
</programlisting>
</screen>
<para>
The PHP script can then create a database connection by simply
passing the <literal>uri:</literal> parameter and pointing to
@ -153,17 +223,17 @@ odbc:DSN=SAMPLE;UID=db2inst1;PWD=password
<programlisting role="php">
<![CDATA[
<?php
/* Connect to an ODBC database using driver invocation */
// Connect to an ODBC database using driver invocation
$dsn = 'uri:file:///usr/local/dbconnect';
$user = '';
$password = '';
try {
$dbh = new PDO($dsn, $user, $password);
}
catch (PDOException $e) {
} catch (PDOException $e) {
echo 'Connection failed: ' . $e->getMessage();
}
?>
]]>
</programlisting>
@ -173,22 +243,25 @@ catch (PDOException $e) {
The following example assumes that &php.ini; contains the following
entry to enable a connection to a MySQL database using only the
alias <literal>mydb</literal>:
<screen>pdo.dsn.mydb=mysql:dbname=testdb;host=127.0.0.1</screen>
<programlisting role="ini">
[PDO]
pdo.dsn.mydb="mysql:dbname=testdb;host=localhost"
</programlisting>
</para>
<programlisting role="php">
<![CDATA[
<?php
/* Connect to an ODBC database using an alias */
// Connect to an ODBC database using an alias
$dsn = 'mydb';
$user = '';
$password = '';
try {
$dbh = new PDO($dsn, $user, $password);
}
catch (PDOException $e) {
}catch (PDOException $e) {
echo 'Connection failed: ' . $e->getMessage();
}
?>
]]>
</programlisting>