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A major rewrite. Implement user comments such as "if same name, last is returned",

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"note that as of 4.0.5 unquoted attributes are supported", and lowercasing.
Wrote an example to demonstrate various points such as . to _ in keys. Moved
use_include_path info to the top, said it's not used with urls and also
mentioned and linked to include_path.  See also htmlentities and urlencode.


git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@112969 c90b9560-bf6c-de11-be94-00142212c4b1
This commit is contained in:
Philip Olson 2003-01-21 19:16:03 +00:00
parent e7feaba4e5
commit 5e78de3943
1 changed files with 46 additions and 7 deletions
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53
reference/url/functions/get-meta-tags.xml
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@ -1,5 +1,5 @@
<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.1 $ -->
<!-- $Revision: 1.2 $ -->
<!-- splitted from ./en/functions/strings.xml, last change in rev 1.2 -->
<refentry id="function.get-meta-tags">
<refnamediv>
@ -18,13 +18,25 @@
</methodsynopsis>
<para>
Opens <parameter>filename</parameter> and parses it line by line
for &lt;meta> tags of the form
for &lt;meta> tags in the file. This can be a local file or
an <acronym>URL</acronym>. The parsing stops at
<literal>&lt;/head&gt;</literal>.
</para>
<para>
Setting <parameter>use_include_path</parameter> to 1 will result
in PHP trying to open the file along the standard include path
as per the <link linkend="ini.include-path">include_path</link>
directive. This is used for local files, not URLs.
</para>
<para>
<example>
<title>Meta Tags Example</title>
<title>What <function>get_meta_tags</function> parses</title>
<programlisting role="html">
<![CDATA[
<meta name="author" content="name">
<meta name="tags" content="php3 documentation">
<meta name="keywords" content="php documentation">
<meta name="DESCRIPTION" content="a php manual">
<meta name="geo.position" content="49.33;-86.59">
</head> <!-- parsing stops here -->
]]>
</programlisting>
@ -38,11 +50,38 @@
can easily use standard array functions to traverse it or access
single values. Special characters in the value of the name
property are substituted with '_', the rest is converted to lower
case.
case. If two meta tags have the same name, only the last one
is returned.
</para>
<para>
Setting <parameter>use_include_path</parameter> to 1 will result
in PHP trying to open the file along the standard include path.
<example>
<title>What <function>get_meta_tags</function> returns</title>
<programlisting="php">
<![CDATA[
<?php
// Assuming the above tags are at example.com
$tags = get_meta_tags('http://www.example.com/');
// Notice how the keys are all lowercase now, and
// how . was replaced by _ in the key.
print $tags['author']; // name
print $tags['keywords']; // php documentation
print $tags['description']; // a php manual
print $tags['geo_position']; // 49.33;-86.59
?>
]]>
</programlisting>
</example>
</para>
<note>
<para>
As of PHP 4.0.5, <function>get_meta_tags</function> supports
unquoted html attributes.
</para>
</note>
<para>
See also <function>htmlentities</function> and
<function>urlencode</function>.
</para>
</refsect1>
</refentry>