Add function for removing perms from a role
>>> [!note] Migrated issue
<!-- Drupal.org comment -->
<!-- Migrated from issue #324231. -->
Reported by: [moshe weitzman](https://www.drupal.org/user/23)
>>>
<p>I suggest adding this to user include. I also suggest renaming install_set_permissions() to install_add_permissions() since thats all it can do due to <code>$perms = array_unique(array_merge($perms, (array)$existing_perms));</code>. That code is useful for set and forget adding of a perm so thats why I propose to keep the function, but change its name. </p>
<div class="codeblock">
<pre><span style="color: #000000"><span style="color: #0000BB"><?php<br></span><span style="color: #FF8000">/**<br> * Remove permissions for a certain role.<br> */<br></span><span style="color: #007700">function </span><span style="color: #0000BB">install_remove_permissions</span><span style="color: #007700">(</span><span style="color: #0000BB">$rid</span><span style="color: #007700">, </span><span style="color: #0000BB">$perms</span><span style="color: #007700">) {<br> </span><span style="color: #FF8000">// Retrieve the currently set permissions.<br> </span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">db_query</span><span style="color: #007700">(</span><span style="color: #DD0000">"SELECT p.perm FROM {role} r INNER JOIN {permission} p ON p.rid = r.rid WHERE r.rid = %d "</span><span style="color: #007700">, </span><span style="color: #0000BB">$rid</span><span style="color: #007700">);<br> </span><span style="color: #0000BB">$existing_perms </span><span style="color: #007700">= array();<br> while (</span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">db_fetch_object</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">)) {<br> </span><span style="color: #0000BB">$existing_perms </span><span style="color: #007700">+= </span><span style="color: #0000BB">explode</span><span style="color: #007700">(</span><span style="color: #DD0000">', '</span><span style="color: #007700">, </span><span style="color: #0000BB">$row</span><span style="color: #007700">-></span><span style="color: #0000BB">perm</span><span style="color: #007700">);<br> }<br> </span><span style="color: #0000BB">$new_perms </span><span style="color: #007700">= </span><span style="color: #0000BB">array_diff</span><span style="color: #007700">(</span><span style="color: #0000BB">$existing_perms</span><span style="color: #007700">, </span><span style="color: #0000BB">$perms</span><span style="color: #007700">);<br> <br> </span><span style="color: #FF8000">// Update the permissions.<br> </span><span style="color: #0000BB">db_query</span><span style="color: #007700">(</span><span style="color: #DD0000">'DELETE FROM {permission} WHERE rid = %d'</span><span style="color: #007700">, </span><span style="color: #0000BB">$rid</span><span style="color: #007700">);<br> </span><span style="color: #0000BB">db_query</span><span style="color: #007700">(</span><span style="color: #DD0000">"INSERT INTO {permission} (rid, perm) VALUES (%d, '%s')"</span><span style="color: #007700">, </span><span style="color: #0000BB">$rid</span><span style="color: #007700">, </span><span style="color: #0000BB">implode</span><span style="color: #007700">(</span><span style="color: #DD0000">', '</span><span style="color: #007700">, </span><span style="color: #0000BB">$new_perms</span><span style="color: #007700">));<br>}<br></span><span style="color: #0000BB">?></span></span></pre></div>
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