edit.php

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<?php
elgg_make_sticky_form('profile:edit');

$guid = get_input('guid');
$owner = get_entity($guid);

if (!$owner || !($owner instanceof ElggUser) || !$owner->canEdit()) {
    register_error(elgg_echo('profile:noaccess'));
    forward(REFERER);
}

// grab the defined profile field names and their load the values from POST.
// each field can have its own access, so sort that too.
$input = array();
$accesslevel = get_input('accesslevel');

if (!is_array($accesslevel)) {
    $accesslevel = array();
}

$profile_fields = elgg_get_config('profile_fields');
foreach ($profile_fields as $shortname => $valuetype) {
    $value = get_input($shortname);
    
    if ($value === null) {
        // only submitted profile fields should be updated
        continue;
    }
    
    // the decoding is a stop gap to prevent &amp;&amp; showing up in profile fields
    // because it is escaped on both input (get_input()) and output (view:output/text). see #561 and #1405.
    // must decode in utf8 or string corruption occurs. see #1567.
    if (is_array($value)) {
        array_walk_recursive($value, function(&$v) {
            $v = elgg_html_decode($v);
        });
    } else {
        $value = elgg_html_decode($value);
    }
    
    // convert tags fields to array values
    if ($valuetype == 'tags') {
        $value = string_to_tag_array($value);
    }

    if ($value && $valuetype == 'url' && !preg_match('~^https?\://~i', $value)) {
        $value = "http://$value";
    }

    if ($valuetype == 'email' && !empty($value) && !is_email_address($value)) {
        register_error(elgg_echo('profile:invalid_email', array(
            elgg_echo("profile:{$shortname}")
        )));
        forward(REFERER);
    }
    
    $input[$shortname] = $value;
}

// display name is handled separately
$name = strip_tags(get_input('name'));
if ($name) {
    if (elgg_strlen($name) > 50) {
        register_error(elgg_echo('user:name:fail'));
    } elseif ($owner->name != $name) {
        $owner->name = $name;
        $owner->save();
    }
}

// go through custom fields
if (sizeof($input) > 0) {
    
    // fetch default access level for the user for use in fallback cases
    $user_default_access = get_default_access($owner);
    
    foreach ($input as $shortname => $value) {
        $options = array(
            'guid' => $owner->guid,
            'metadata_name' => $shortname,
            'limit' => false
        );
        elgg_delete_metadata($options);
        
        if (!is_null($value) && ($value !== '')) {
            // only create metadata for non empty values (0 is allowed) to prevent metadata records
            // with empty string values #4858
            
            if (isset($accesslevel[$shortname])) {
                $access_id = (int) $accesslevel[$shortname];
            } else {
                // this should never be executed since the access level should always be set
                $access_id = $user_default_access;
            }
            if (is_array($value)) {
                $i = 0;
                foreach ($value as $interval) {
                    $i++;
                    $multiple = ($i > 1) ? TRUE : FALSE;
                    create_metadata($owner->guid, $shortname, $interval, 'text', $owner->guid, $access_id, $multiple);
                }
            } else {
                create_metadata($owner->getGUID(), $shortname, $value, 'text', $owner->getGUID(), $access_id);
            }
        }
    }

    $owner->save();

    // Notify of profile update
    elgg_trigger_event('profileupdate', $owner->type, $owner);

    elgg_clear_sticky_form('profile:edit');
    system_message(elgg_echo("profile:saved"));
}

forward($owner->getUrl());