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<title>[13718] trunk/wp-includes/formatting.php: Introduce sanitize_key().</title>
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<dl>
<dt>Revision</dt> <dd><a href="http://trac.wordpress.org/changeset/13718">13718</a></dd>
<dt>Author</dt> <dd>ryan</dd>
<dt>Date</dt> <dd>2010-03-16 19:19:32 +0000 (Tue, 16 Mar 2010)</dd>
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<h3>Log Message</h3>
<pre>Introduce sanitize_key().</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkwpincludesformattingphp">trunk/wp-includes/formatting.php</a></li>
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<h3>Diff</h3>
<a id="trunkwpincludesformattingphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-includes/formatting.php (13717 => 13718)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-includes/formatting.php 2010-03-16 18:36:26 UTC (rev 13717)
+++ trunk/wp-includes/formatting.php 2010-03-16 19:19:32 UTC (rev 13718)
</span><span class="lines">@@ -751,6 +751,31 @@
</span><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> /**
</span><ins>+ * Sanitize a string key.
+ *
+ * Keys are used as internal identifiers. They should be lowercase ASCII. Dashes and underscores are allowed.
+ *
+ * @since 3.0.0
+ *
+ * @param string $key String key
+ * @return string Sanitized key
+ */
+function sanitize_key( $key ) {
+ $raw_key = $key;
+ $key = wp_strip_all_tags($key);
+ // Kill octets
+ $key = preg_replace('|%([a-fA-F0-9][a-fA-F0-9])|', '', $key);
+ $key = preg_replace('/&.+?;/', '', $key); // Kill entities
+
+ $key = preg_replace('|[^a-z0-9 _.\-@]|i', '', $key);
+
+ // Consolidate contiguous whitespace
+ $key = preg_replace('|\s+|', ' ', $key);
+
+ return apply_filters('sanitize_key', $key, $raw_key);
+}
+
+/**
</ins><span class="cx"> * Sanitizes title or use fallback title.
</span><span class="cx"> *
</span><span class="cx"> * Specifically, HTML and PHP tags are stripped. Further actions can be added
</span></span></pre>
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