PHP EvalElse函數代碼示例

function ckr_if_image_count($atts, $thing)
{
    // Extract attributes from tag
    extract(lAtts(array('category' => false, 'min' => false, 'max' => false, 'equal' => false, 'not' => false), $atts));
    // Count the images in specified category if given or globally
    $count = $category ? intval(ckr_image_count(array('category' => $category))) : intval(ckr_image_count());
    // Instead of almost unreadable if-else syntax, we use this clever switch-true/case-if counstruct
    switch (true) {
        case $min && !$max && !$equal && !$not:
            // Is greater than min value
            return parse(EvalElse($thing, $count >= intval($min) ? true : false));
            break;
        case $max && !$min && !$equal && !$not:
            // Is lesser than max value
            return parse(EvalElse($thing, $count <= intval($max) ? true : false));
            break;
        case $equal && !$min && !$max && !$not:
            // Is equal
            return parse(EvalElse($thing, $count == intval($equal) ? true : false));
            break;
        case $not && !$min && !$max && !$equal:
            // Is not equal
            return parse(EvalElse($thing, $count != intval($not) ? true : false));
            break;
        case $min && $max && !$equal && !$not:
            // Between min and max
            return parse(EvalElse($thing, $count >= intval($min) && $count <= intval($max) ? true : false));
            break;
        default:
            // Anything else will output an error message
            return '<!-- ckr_if_image_count: Wrong attribute count or combination. -->';
    }
}

 /**
  * Conditional for yield.
  *
  * @param  array  $atts
  * @param  string $thing
  * @return string
  */
 public static function renderIfYield($atts, $thing)
 {
     global $yield;
     extract(lAtts(array('value' => null), $atts));
     $inner = end($yield);
     return parse(EvalElse($thing, $inner !== null && ($value === null || (string) $inner === (string) $value)));
 }

function oui_if_dailymotion($atts, $thing)
{
    global $thisarticle;
    extract(lAtts(array('custom' => null, 'video' => null), $atts));
    $result = $video ? _oui_dailymotion($video) : _oui_dailymotion($thisarticle[strtolower($custom)]);
    return defined('PREF_PLUGIN') ? parse($thing, $result) : parse(EvalElse($thing, $result));
}

/**
 * Evaluate counting results.
 *
 * @param array $atts
 * @property string $atts['eval'] Valid PHP comparison operator.
 * @property string $atts['table'] MySQL table name.
 * @property string $atts['where'] MySQL WHERE clause.
 */
function jmd_if_count($atts, $thing)
{
    extract(lAtts(array('eval' => '', 'table' => '', 'where' => ''), $atts));
    global $jmd_count_value;
    $jmd_count_value = jmd_count(array('table' => $table, 'where' => $where));
    $condition = eval("return({$jmd_count_value} {$eval});");
    $out = EvalElse($thing, $condition);
    return parse($out);
}

 /**
  * Checks if the file is the last in the list.
  *
  * @param  array  $atts
  * @param  string $thing
  * @return string
  */
 public static function renderIfLastFile($atts, $thing)
 {
     global $thisfile;
     assert_file();
     return parse(EvalElse($thing, !empty($thisfile['is_last'])));
 }

function if_jmd_rate_voted($atts, $thing)
{
    $condition = $GLOBALS['jmd_rate_instance']->voted;
    $out = EvalElse($thing, $condition);
    return parse($out);
}

function if_custom_field($atts, $thing)
{
    global $thisarticle, $prefs;
    extract(lAtts(array('name' => @$prefs['custom_1_set'], 'val' => NULL), $atts));
    if ($val !== NULL) {
        $cond = @$thisarticle[$name] == $val;
    } else {
        $cond = !empty($thisarticle[$name]);
    }
    return parse(EvalElse($thing, $cond));
}

function if_variable($atts, $thing = NULL)
{
    global $variable;
    extract(lAtts(array('name' => '', 'value' => ''), $atts));
    if (empty($name)) {
        trigger_error(gTxt('variable_name_empty'));
        return;
    }
    if (isset($variable[$name])) {
        if (!isset($atts['value'])) {
            $x = true;
        } else {
            $x = $variable[$name] == $value;
        }
    } else {
        $x = false;
    }
    return parse(EvalElse($thing, $x));
}

function zem_if_alice($atts, $thing)
{
    extract(lAtts(array('name' => 'Bob'), $atts));
    return parse(EvalElse($thing, $name == 'Alice'));
}

 function l10n_if_lang($atts, $thing)
 {
     /*
     Basic markup tag. Use this to wrap blocks of content you only want to appear
     when the specified language is set or if the direction of the selected language matches
     what you want. (Output different css files for rtl layouts for example).
     */
     global $l10n_language;
     $out = '';
     if (!$l10n_language) {
         return $out;
     }
     extract(lAtts(array('lang' => $l10n_language['short'], 'dir' => '', 'wraptag' => ''), $atts));
     if (!empty($dir) and in_array($dir, array('rtl', 'ltr'))) {
         #	Does the direction of the currently selected site language match that requested?
         #	If so, parse the contained content.
         $cond = $dir == MLPLanguageHandler::get_lang_direction($l10n_language['short']);
         $out = parse(EvalElse($thing, $cond)) . n;
     } else {
         #	If the required language matches the site language, output a suitably marked up block of content.
         $cond = ($lang == $l10n_language['short'] or $lang == $l10n_language['long']);
         $out = parse(EvalElse($thing, $cond));
         if (!empty($wraptag)) {
             $dir = MLPLanguageHandler::get_lang_direction_markup($lang);
             $out = "<{$wraptag} lang=\"{$lang}\"{$dir}/>" . $out . "</{$wraptag}>" . n;
         }
     }
     return $out;
 }

function sed_if_comments($atts, $thing)
{
    global $thisarticle, $pretext;
    $count = 0;
    if (!isset($thisarticle)) {
        $id = gAtt($atts, 'id', gps('id'));
        if (!$id && @$pretext['id']) {
            $id = $pretext['id'];
        }
        if (isset($id)) {
            $count = safe_field('comments_count', 'textpattern', "id={$id}");
        }
    } else {
        $count = $thisarticle['comments_count'];
    }
    return parse(EvalElse($thing, $count > 0));
}

/**
 * Checks for neighbors.
 * 
 * @param array $atts
 * @param string $atts['type'] Type of neighbor to check for ('next'||'prev')
 */
function jmd_if_neighbor($atts, $thing)
{
    extract(lAtts(array('type' => ''), $atts));
    $condition = $GLOBALS['jmd_neighbor']->type == $type;
    $out = EvalElse($thing, $condition);
    return parse($out);
}

function atb_output_form_if_exists($atts, $thing)
{
    global $yield;
    extract(lAtts(array('name' => ''), $atts));
    if (atb_form_exists($name)) {
        $yield[] = $thing !== null ? parse(EvalElse($thing, true)) : null;
        $outp = parse_form($name);
        array_pop($yield);
    } else {
        $outp = parse(EvalElse($thing, false));
    }
    return $outp;
}

function sed_pcf_if_field_section($atts, $thing = '')
{
    #	Tests to see if there is a named section of the named custom field.
    global $thisarticle;
    extract(lAtts(array('custom' => '', 'section' => ''), $atts));
    $cond = false;
    $vars = @$thisarticle[$custom];
    if (!empty($vars) and !empty($section)) {
        $vars = sed_lib_extract_packed_variable_section($section, $vars);
        $cond = is_array($vars);
    }
    return parse(EvalElse($thing, $cond));
}

function if_data($atts, $thing = NULL)
{
    $atts = lAtts(array('debug' => 0, 'ignore' => 0), $atts);
    $f = '/<txp:(\\S+)\\b(.*)(?:(?<!br )(\\/))?' . chr(62) . '(?(3)|(.+)<\\/txp:\\1>)/sU';
    $iftext = EvalElse($thing, true);
    $thresh = 1 + strlen(preg_replace($f, '', $iftext));
    $parsed = parse($iftext);
    if ($atts['ignore']) {
        $parsed = trim($parsed);
    }
    $parsed_len = strlen($parsed);
    $empty = 'Data';
    if (strlen($parsed) < $thresh) {
        #or !preg_match('/\S/', $parsed)) {
        $parsed = parse(EvalElse($thing, false));
        $empty = 'No Data';
    }
    return $atts['debug'] ? "<!-- {$empty} -- Threshhold: {$thresh} Length: {$parsed_len} -->" . $parsed : $parsed;
}