随机播放给定的数组

Question

我有这个标签云，目前设置为首先显示最受欢迎的项目，使用（第 205 行）：

//              arsort($array_end);

反转数组。如果我省略它，它会按字母顺序显示列表。

我希望随机显示结果。我想到了 php-shuffle，但我不知道该怎么做。感谢有人可以在这里帮助我，干杯！

见下方 php (also uploaded php here as .txt):

//activate plugin WP function

//Checking search meter dependencies
global $wpdb, $table_prefix;
$sql = "SHOW TABLES LIKE '{$table_prefix}searchmeter_recent'";
$results = $wpdb->get_results($sql);
if (!$wpdb->num_rows )
{
    die( '<p>This plugin will not work unless <a href="http://wordpress.org/extend/plugins/search-meter/" target="_blank">Search Meter plugin</a> is installed and activated.</p>' );
}


register_activation_hook( __FILE__, 'initializeSearchTagCloud');

//activat plugin WP function
register_deactivation_hook( __FILE__, 'deactivateSearchTagCloud');

//set initial values when the plugin is activated
function initializeSearchTagCloud()
{
    $search_tag_cloud=new searchTagCloud();
    $search_tag_cloud->initializeSearchTagCloud();
}

//delete DB options when the plugin is activated
function deactivateSearchTagCloud() {
    delete_option("searchTagCloudOption");
}

class searchTagCloud
{
    public $widgetText;
    public $numberSearches;
    public $max_size;
    public $min_size;
    public $days_to_display;
    var $error;

    //constuctor function
    function __construct()
    {
        $this->min_size=12;
        $this->max_size=32;
        $this->widgetText = 'What people is searching?';
        $this->total_tags=10;
        $this->show_author_credit=0;
        $this->days_to_display=30;
        //the size of the tag cloud is missed
    }

    //initialize options
    //size of the smallest tag
    //maximum size of the biggest tag
    //Personalized text for the tag cloud
    //how many links to display
    function initializeSearchTagCloud()
    {
        global $wpdb, $table_prefix;
        $wpdb->query("ALTER TABLE `{$table_prefix}searchmeter_recent` ADD COLUMN visible INT( 1 ) NOT NULL DEFAULT '1'");

        $initializeOptions = array(
        "min_size"      => $this->min_size,
        "max_size"     => $this->max_size,
        "total_tags"     => $this->total_tags,
        "widgetText" => $this->widgetText,
        "days_to_display" => $this->days_to_display,
        "show_author_credit" => $this->show_author_credit,
        );
        add_option("searchTagCloudOption", $initializeOptions, '', 'yes');  
        //select recent searched terms
    }   

    //get DB options for the Search Tag Cloud
    function getSearchTagCloudOptions()
    {
        $myOptions = get_option('searchTagCloudOption');
        $this->min_size=$myOptions['min_size'];
        $this->max_size=$myOptions['max_size'];
        $this->widgetText=$myOptions['widgetText'];
        $this->total_tags=$myOptions['total_tags']; 
        $this->days_to_display=$myOptions['days_to_display'];   
        $this->show_author_credit=$myOptions['show_author_credit'];
    }

    //set Search Tag Cloud class values
    function setSearchTagCloudValues($min_size,$max_size,$total_tags,$widgetText,$show_author_credit,$days_to_display)
    {
        $this->min_size=$min_size;
        $this->max_size=$max_size;
        $this->widgetText=$widgetText;
        $this->total_tags=$total_tags;  
        $this->show_author_credit=$show_author_credit;
        $this->days_to_display=$days_to_display;
    }

    //update Search Tag Cloud class values and DB options
    function updateSearchTagCloud($array_post)
    {       
        global $wpdb, $table_prefix;

        $this->setSearchTagCloudValues($array_post['min_size'],$array_post['max_size'],$array_post['total_tags'],$array_post['widgetText'],$array_post['show_author_credit'],$array_post['days_to_display']);

        //set the new options in the database
        update_option("searchTagCloudOption", $array_post, '', 'yes');

        //I set all to visible
        $wpdb->query("UPDATE `{$table_prefix}searchmeter_recent` SET visible=1");

        if(is_array($array_post['checkbox_visible']))
        {
            foreach($array_post['checkbox_visible'] as $index=>$value)
                $wpdb->query("UPDATE `{$table_prefix}searchmeter_recent` SET visible=0 WHERE terms = '{$value}'");  
        }
        return __("Options Saved Correctly");
    }

    //Function to select from search meter tables in the database the most common searches. 
    function select_searches_for_tagcloud() 
    {
        // List the most recent successful searches.
        global $wpdb, $table_prefix;
        $this->getSearchTagCloudOptions();
        $count = intval($this->total_tags);

        //first I need to know how many invisible tags we have

        //select terms, COUNT( * ) AS total FROM `wp_searchmeter_recent` WHERE datetime>='2010-07-05' GROUP BY `terms` LIMIT 0,15

        //$datebeginning = date()-dÌas
        $datebeginning  = date('Y-m-d', mktime(0, 0, 0, date("m"),date("d")-$this->days_to_display, date("Y")));

        $tags = $wpdb->get_results(
        //select recent searched terms
            " SELECT terms, visible, COUNT( * ) AS total
                FROM `{$table_prefix}searchmeter_recent`
                WHERE datetime>='{$datebeginning}' AND
                hits>0 AND
                visible=1
                GROUP BY `terms`
                LIMIT {$count}");

        return $tags;   
    }

    function selectPopularSearchesforAdmin()
    {
        // List the most recent successful searches.
        global $wpdb, $table_prefix;
        $this->getSearchTagCloudOptions();
        $count = intval($this->total_tags);

        //first I need to know how many invisible tags we have

        //select terms, COUNT( * ) AS total FROM `wp_searchmeter_recent` WHERE datetime>='2010-07-05' GROUP BY `terms` LIMIT 0,15

        //$datebeginning = date()-dÌas
        $datebeginning  = date('Y-m-d', mktime(0, 0, 0, date("m"),date("d")-$this->days_to_display, date("Y")));

        $invisible_tags = $wpdb->get_results(
            " SELECT terms, COUNT( * ) AS total
                FROM `{$table_prefix}searchmeter_recent`
                WHERE visible=1 AND
                `datetime`>='{$datebeginning}' AND
                hits>0
                GROUP BY `terms`
                LIMIT {$count}");

        // I have to show the tags plus the invisible ones
        $count = $count + count($invisible_tags);

        $tags = $wpdb->get_results(
        //select recent searched terms
            " SELECT terms, visible, COUNT( * ) AS total
                FROM `{$table_prefix}searchmeter_recent`
                WHERE datetime>='{$datebeginning}' AND
                hits>0
                GROUP BY `terms`
                LIMIT {$count}");

        return $tags;       
    }   

    //function that creates the tag cloud and prints it.
    function popular_searches_tag_cloud($args)
    {
            $results=$this->select_searches_for_tagcloud();

            if(count($results)>0)
            {
                foreach($results as $index)
                {
                    $array_end[$index->terms]=$index->total;
                }

//              arsort($array_end);


                // largest and smallest array values
                $max_qty = max(array_values($array_end));
                $min_qty = min(array_values($array_end));

                // find the range of values
                $spread = $max_qty - $min_qty;
                if ($spread == 0) { // we don't want to divide by zero
                        $spread = 1;
                }

                // set the font-size increment
                $step = ($this->max_size - $this->min_size) / ($spread);

                //set the counter for the loop at 0
                $counter=0;

                // loop through the tag array
                if(count($array_end)>0)
                {
                    $html='<div class="search-tag-cloud">';
                    $html.='<h2>'.$this->widgetText.'</h2>';
                    foreach ($array_end as $key => $value) 
                    {
                        if($counter<=$this->total_tags)
                        {
                            $counter++;
                            // calculate font-size
                            // find the $value in excess of $min_qty
                            // multiply by the font-size increment ($size)
                            // and add the $min_size set above
                            $size = round($this->min_size + (($value - $min_qty) * $step));

                            $html.= '<a href="?s=' . $key . '" style="font-size: ' . $size . 'px" 
                            title="' . $key . '">' . $key . '</a> ';
                        }
                        else
                            break;      
                    }

                    if($this->show_author_credit==1)
                        $html.='<div id="search-tag-cloud"><p style="text-align:right"><small>WP plugin by <a href="http://www.josellinares.com/tag/marketing-online/" title="Marketing Online" target="_blank">Marketing Online</a></small></p></div>';

                    $html.='</div>';
                    echo $html;
                }
            }
    }
}
/*end class--------------------------------*/


//setting the admin page
//create admin->settings page
//create Settings Section to configure plugin values
if (is_admin() ){ // admin actions
    add_action('set_twitter_keyword_values','set_twitter_keyword');
    add_action('admin_menu','admin_setSearchTagCloud');
    add_action('admin_init','searchTagCloudSettings' );
} else {
  // non-admin enqueues, actions, and filters
}

//adding the page in the admin section
function admin_setSearchTagCloud() {
    add_options_page('Popular Searches Tag Cloud Options', 'Popular Searches Tag Cloud', 8,__FILE__, 'searchTagCloudOptions');
}

//register form fields
function searchTagCloudSettings() { // whitelist options
    register_setting('search-tag-cloud-options', 'widgetText', 'wp_filter_nohtml_kses');
    register_setting('search-tag-cloud-options', 'max_size', 'checkValueisInt');
    register_setting('search-tag-cloud-options', 'min_size', 'checkValueisInt');
    register_setting('search-tag-cloud-options', 'total_tags', 'checkValueisInt');
    register_setting('search-tag-cloud-options', 'checkbox_visible');
    register_setting('search-tag-cloud-options', 'show_author_credit', 'checkValueisInt');
    register_setting('search-tag-cloud-options', 'days_to_display', 'checkValueisInt');
}

function searchTagCloudOptions() 
{   
    $html= '<div class="wrap">';
    $html= '<form method="post">';
    settings_fields('search-tag-cloud-options');
    $html.= '<h2>'. __("Popular Searches Tag Cloud Options: Manage Options").'</h2>';
    if($_POST['type-submit']=='Y')
    {
        $message=updateSearchTagCloudForm($_POST);
        if($message!='')
            $html.= '<div class="error"><p><strong>'.$message.'</strong></p></div>';
        else
            $html.= '<div class="updated"><p><strong>'.__("Options Saved").'</strong></p></div>';
        $myOptions=get_option('searchTagCloudOption');
    }
    else
        $myOptions=get_option('searchTagCloudOption');

    $html.= '<label for="newpost-edited-text">'.__('Set the header for the Popular Searches Tag Cloud to be visible: ').'</label>';
    $html.= '<input type="text" name="widgetText" size="40" maxlength="150" value="'.$myOptions['widgetText'].'" /><br /><br />';
    $html.= '<label for="newpost-edited-text">'.__('Size of the biggest tag: ').'</label>';
    $html.= '<input type="text" name="max_size" size="10" maxlength="3" value="'.$myOptions['max_size'].'" /><br /><br />';
    $html.= '<label for="newpost-edited-text">'.__('Size of the smallest tag: ').'</label>';
    $html.= '<input type="text" name="min_size" size="10" maxlength="3" value="'.$myOptions['min_size'].'" /><br /><br />';
    $html.= '<label for="newpost-edited-text">'.__('Number of searches to display: ').'</label>';
    $html.= '<input type="text" name="total_tags" size="10" maxlength="3" value="'.$myOptions['total_tags'].'" /><br /><br />';
    $html.= '<label for="newpost-edited-text">'.__('You want to show searches from the last : ').'</label>';
    $html.= '<input type="text" name="days_to_display" size="10" maxlength="3" value="'.$myOptions['days_to_display'].'" /> days<br /><br />';
    $html.=getMostPopularSearchesAdmin($results, 15, false);
    $html.= '<br /><br /><label for="newpost-edited-text">'.__('Display developer credits in the Widget: ').'</label>';
    $html.= '<input type="checkbox" name="show_author_credit" value="1" ';

    if ($myOptions['show_author_credit']==1) 
            $html.='checked';

    $html.='/><br /><br />';    
    $html.= '<input type="hidden" name="type-submit" value="Y">';
    $html.= '<br><input type="submit" class="button-primary" value="'.__('Save Options').'" />';

    //here I need the list of all searches, order by total
    $html.= '</form>';
    $html.= '</div>';

    echo $html;
}

//function to show common searches to edit in the admin page. Completes the admin form.
function getMostPopularSearchesAdmin(){

    $searchcloud=new searchTagCloud();
    $results=$searchcloud->selectPopularSearchesforAdmin();

    if (count($results)) {
        $html='<table cellpadding="3" cellspacing="2">';
        $html.='<tbody>';
        $html.='<tr class="alternate"><th class="left">Term</th><th>Set not Visible</th>';
        if ($do_include_successes) {
            $html.='<th>Results</th>';
        }
        $html.='</tr>';
        $class= '';
        $counter=0;
        foreach ($results as $result) {
            $html.='<tr class="'.$class.'">';
            $html.='<td><a href="'.get_bloginfo('wpurl').'/wp-admin/edit.php?s='.urlencode($result->terms).'&submit=Search">'.htmlspecialchars($result->terms).'</a></td>';
            $html.='<td align="center"><input type="checkbox" name="checkbox_visible['.$counter.']" value="'.$result->terms.'" ';

            if ($result->visible==0) 
                $html.='checked';
            $html.='/>';            
            $html.='</td>';
            $html.='</tr>';

            $class = ($class == '' ? 'alternate' : '');

            $counter++;
        }

        $html.='</tbody>';
        $html.='</table>';


    } else {
        $html.='<p>No searches recorded for this period.</p>';
    }
    return $html;
}

//This functions checks the data send by the form and calls the update the option.
function updateSearchTagCloudForm($array)
{
    $message='';
    $search_tag_cloud=new searchTagCloud();

    //check values before inserting into DB
    $message=checkNumbers($array['max_size']);
    $message.=checkNumbers($array['min_size']);
    $message.=checkNumbers($array['total_tags']);
    $message.=checkSearchCloudWidgetText($array['widgetText']);
    $message.=checkNumbers($array['days_to_display']);

    if($array['show_author_credit'])
        $message.=checkNumbers($array['show_author_credit']);

    if($message!='')
        return $message;    

    if($message=='')    
    {   
        $search_tag_cloud->updateSearchTagCloud($array);
    }
}

//checking function for the form fields functions in the admin page
function checkNumbers($number)
{   
    if(!intval( $number ))
        return __("The field maximum size and minimum size have to be numeric<br />");
    elseif($number>100)
        return __("Maximum size and minimum size have to be smaller than 100<br />");
    else
        return "";
}

//checking function for the form fields functions in the admin page
function checkSearchCloudWidgetText($widgetText)
{
    if(strlen($widgetText)>150)
    {
        return __("You are not allowed to include more than 150 characters in the Widget Text<br />");
    }   
    return "";
}

//Widgetizing the plugin functions
function setSearchTagCloudPlugin()
{
  register_sidebar_widget(__('Popular Searches Tag Cloud'), 'callSearchTagCloud'); 
  register_widget_control(__('Popular Searches Tag Cloud'), 'callSearchTagCloud', 200, 200 );
}

add_action("plugins_loaded", "setSearchTagCloudPlugin");

//function to initailize the class. Called from sidebar.php, it checks dependencies from the search meter plugin.
function callSearchTagCloud()
{
    global $wpdb, $table_prefix;

    $sql = "SHOW TABLES LIKE '{$table_prefix}searchmeter_recent'";
    $results = $wpdb->get_results( $sql );
    if ( ! $wpdb->num_rows )
    {
        die( '<p>This plugin will not work unless <a href="http://wordpress.org/extend/plugins/search-meter/" target="_blank">Search Meter plugin</a> is installed and activated. -- widget</p>' );
    }
    else
    {
        $search_tag_cloud=new searchTagCloud();
        $search_tag_cloud->initializeSearchTagCloud();
    }
    $searchcloud=new searchTagCloud();
    $searchcloud->popular_searches_tag_cloud($tags,$args);  
}

    function setSearchTagCloudControl()
    {
      echo '<p><label for="myHelloWorld-WidgetTitle">To configure options go to     "Settings > Popular Searches Tag Cloud" in this admin panel</label></p>';
     }

Answer 1

使用shuffle函数：

This function shuffles (randomizes the order of the elements in) an array.

稍低于

//              arsort($array_end);`

你得到了这个代码：

               foreach ($array_end as $key => $value) 
               {

替换为：

               $array_end_keys = array_keys($array_end);
               shuffle($array_end_keys);
               foreach ($array_end_keys as $key) 
               {
                   $value = $array_end[$key];

随机播放给定的数组

Shuffle given array

php

arrays

search

shuffle

tag-cloud