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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 321911 $ -->
<refentry xml:id="quickhashinthash.loadfromstring" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>QuickHashIntHash::loadFromString</refname>
<refpurpose>This factory method creates a hash from a string</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<modifier>public</modifier> <modifier>static</modifier> <type>QuickHashIntHash</type><methodname>QuickHashIntHash::loadFromString</methodname>
<methodparam><type>string</type><parameter>contents</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>options</parameter></methodparam>
</methodsynopsis>
<para>
This factory method creates a new hash from a definition in a string. The
file format consists of 32 bit signed integers packed together in the
Endianness that the system that the code runs on uses. For each element
there are two 32 bit signed integers stored. The first of each element is
the key, and the second is the value belonging to the key.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>contents</parameter></term>
<listitem>
<para>
The string containing a serialized format of the hash.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>options</parameter></term>
<listitem>
<para>
The same options that the class' constructor takes; except that the size
option is ignored. It is automatically calculated to be the same as the
number of entries in the hash, rounded up to the nearest power of two
with a maximum limit of 4194304.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns a new QuickHashIntHash.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>QuickHashIntHash::loadFromString</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$contents = file_get_contents( dirname( __FILE__ ) . "/simple.hash" );
$hash = QuickHashIntHash::loadFromString(
$contents,
QuickHashIntHash::DO_NOT_USE_ZEND_ALLOC
);
foreach( range( 0, 0x0f ) as $key )
{
printf( "Key %3d (%2x) is %s\n",
$key, $key,
$hash->exists( $key ) ? 'set' : 'unset'
);
}
?>
]]>
</programlisting>
&example.outputs.similar;
<screen>
<![CDATA[
Key 0 ( 0) is unset
Key 1 ( 1) is set
Key 2 ( 2) is set
Key 3 ( 3) is set
Key 4 ( 4) is unset
Key 5 ( 5) is set
Key 6 ( 6) is unset
Key 7 ( 7) is set
Key 8 ( 8) is unset
Key 9 ( 9) is unset
Key 10 ( a) is unset
Key 11 ( b) is set
Key 12 ( c) is unset
Key 13 ( d) is set
Key 14 ( e) is unset
Key 15 ( f) is unset
]]>
</screen>
</example>
</para>
</refsect1>
</refentry>
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