PHP length函数代码示例

 function widget($args, $n = '')
 {
     // $args is an array of strings that help widgets to conform to
     // the active theme: before_widget, before_title, after_widget,
     // and after_title are the array keys. Default tags: li and h2.
     extract($args);
     //nb. $name comes out of this, hence the use of $n
     global $advman_engine;
     //If name not passed in (Sidebar Modules), extract from the widget-id (WordPress Widgets)
     if ($n == '') {
         $l = length(__('Ad: '));
         $n = substr($args['widget_name'], $l);
         //Chop off beginning advman- bit
     }
     if ($n == 'default-ad') {
         $n = $advman_engine->getSetting('default-ad');
     }
     $ad = $advman_engine->selectAd($n);
     if (!empty($ad)) {
         $widgets = $advman_engine->getSetting('widgets');
         $id = substr(md5($ad->name), 0, 10);
         $suppress = !empty($widgets[$id]['suppress']);
         $ad_widget = '';
         $ad_widget .= $suppress ? '' : $before_widget;
         if (!empty($widgets[$id]['title'])) {
             $ad_widget .= $suppress ? '' : $before_title;
             $ad_widget .= $widgets[$id]['title'];
             $ad_widget .= $suppress ? '' : $after_title;
         }
         $ad_widget .= $ad->display();
         //Output the selected ad
         $ad_widget .= $suppress ? '' : $after_widget;
         echo $ad_widget;
     }
 }

 public static function truncate($subject, $length, $omission = '...')
 {
     if (length($subject) > $length) {
         $omission_length = length($omission);
         $subject = substr($subject, 0, length($subject) - $omission_length);
         $subject .= $omission;
     }
     return $subject;
 }

/**
 * Determine if a given string ends with a given substring.
 *
 * @param string       $haystack
 * @param string|array $needles
 *
 * @return bool
 */
function ends_with(string $haystack, $needles) : bool
{
    foreach ((array) $needles as $needle) {
        if ((string) $needle === substr($haystack, -length($needle))) {
            return true;
        }
    }
    return false;
}

/**
 * Returns the number of elements in a list.
 *
 * @param Cons $alist a list
 */
function length($alist)
{
    if (isNull($alist)) {
        return 0;
    } elseif (isPair($alist)) {
        return 1 + length(cdr($alist));
    } else {
        throw new \InvalidArgumentException("{$alist} is not a proper list");
    }
}

/**
 *
 */
function wfSpecialGeo($page = '')
{
    global $wgOut, $wgLang, $wgRequest;
    $coordinates = htmlspecialchars($wgRequest->getText('coordinates'));
    $coordinates = explode(":", $coordinates);
    $ns = array_shift($coordinates);
    $ew = array_shift($coordinates);
    if (0 < count($coordinates)) {
        $zoom = length(array_shift($coordinates));
    } else {
        $zoom = 6;
    }
    $ns = explode(".", $ns);
    $ew = explode(".", $ew);
    while (count($ns) < 3) {
        $ns[] = "0";
    }
    while (count($ew) < 3) {
        $ew[] = "0";
    }
    $mapquest = "http://www.mapquest.com/maps/map.adp?latlongtype=decimal&latitude={$ns[0]}.{$ns[1]}&longitude={$ew[0]}.{$ew[1]}&zoom={$zoom}";
    $mapquest = "<a href=\"{$mapquest}\">Mapquest</a>";
    $wgOut->addHTML("{$mapquest}");
    /*	
    	if( $wgRequest->getVal( 'action' ) == 'submit') {
    		$page = $wgRequest->getText( 'pages' );
    		$curonly = $wgRequest->getCheck( 'curonly' );
    	} else {
    		# Pre-check the 'current version only' box in the UI
    		$curonly = true;
    	}
    	
    	if( $page != "" ) {
    		header( "Content-type: application/xml; charset=utf-8" );
    		$pages = explode( "\n", $page );
    		$xml = pages2xml( $pages, $curonly );
    		echo $xml;
    		wfAbruptExit();
    	}
    	
    	$wgOut->addWikiText( wfMsg( "exporttext" ) );
    	$titleObj = Title::makeTitle( NS_SPECIAL, "Export" );
    	$action = $titleObj->escapeLocalURL();
    	$wgOut->addHTML( "
    <form method='post' action=\"$action\">
    <input type='hidden' name='action' value='submit' />
    <textarea name='pages' cols='40' rows='10'></textarea><br />
    <label><input type='checkbox' name='curonly' value='true' checked='checked' />
    " . wfMsg( "exportcuronly" ) . "</label><br />
    <input type='submit' />
    </form>
    " );
    */
}

function Perla_strlen($text) {
    if (isset($text)) {
        return length($text);
    }
    else
    {
        return 'Podaj ciąg mający więcej niż 0 znaków!';
    }
    echo Perla_reverse('perła');
    //test
}

 public function getParentCategory($category_id)
 {
     if (length($category_id) < 2) {
         throw Dolcore_Exception(sprintf(_('Tried to get the parent category of a top category %s'), $category_id));
     }
     $parent_id = substr($category_id, 0, -1);
     $parent = $this->getCategory($parent_id);
     if (!$parent) {
         throw Dolcore_Exception(sprintf(_('No parent category for child category %s'), $category_id));
     }
     return $parent;
 }

function readbtable($tfile, $genelist, $numgenes)
{
    $f = fopen($tfile, "rb");
    $out = array();
    for ($i = 0; $i < length($genelist); $i++) {
        fseek($f, $genelist[$i] * $numgenes - 1);
        #from start???
        $out[] = fread($f, $numgenes);
        #double somehow
    }
    fclose($f);
    return $out;
}

 public function addItem($vars = array())
 {
     $cnf = Zend_Registry::get('cnf');
     $db = Zend_Db::factory($cnf->db);
     $cols = "";
     $values = "";
     foreach ($vars as $key => $value) {
         $coma = length($cols) > 0 ? "," : "";
         $cols += $coma + "`{$key}\\`";
         $values += $coma + "\\'{$value}\\'";
     }
     $db->query("INSERT admin_menu ({$cols}) VALUES ({$values})");
 }

 public function checkLastConsonantSoftness($word)
 {
     if (($substring = last_position_for_one_of_chars(lower($word), array_map(__NAMESPACE__ . '\\lower', self::$consonants))) !== false) {
         if (in_array(slice($substring, 0, 1), ['й', 'ч', 'щ'])) {
             // always soft consonants
             return true;
         } else {
             if (length($substring) > 1 && in_array(slice($substring, 1, 2), ['е', 'ё', 'и', 'ю', 'я', 'ь'])) {
                 // consonants are soft if they are trailed with these vowels
                 return true;
             }
         }
     }
     return false;
 }

 public static function substr($str, $startPos, $length = 0)
 {
     if ($startPos < 0) {
         $startPos = length($str) + $startPos;
         if ($startPos < 0) {
             $startPos = length($str);
         }
     }
     preg_match_all("/./u", $str, $array);
     if ($length) {
         $end = $startPos + $length;
         return join("", array_slice($array[0], $start, $end));
     } else {
         return join("", array_slice($array[0], $start));
     }
 }

 public function do($searchData, $cleanWord)
 {
     if (length($cleanWord) > length($searchData)) {
         throw new LogicException('[Cleaner::data()] -> 3.($cleanWord) parameter not be longer than 2.($searchData) parameter!');
     }
     if (!is_array($searchData)) {
         $result = str_replace($cleanWord, '', $searchData);
     } else {
         if (!is_array($cleanWord)) {
             $cleanWordArray[] = $cleanWord;
         } else {
             $cleanWordArray = $cleanWord;
         }
         $result = array_diff($searchData, $cleanWordArray);
     }
     return $result;
 }

 function url_upload($url)
 {
     if ($img_type = $this->check_img_url($url)) {
         $content = $this->down_with_curl($url);
     } else {
         $this->err_msg .= ' !URL изображения не верен ';
         return FALSE;
     }
     if ($content == false && length($content) < 100) {
         $this->err_msg .= ' !Изображение не загруженно ';
         return FALSE;
     }
     $img_fname = md5($content) . '.' . $img_type;
     file_put_contents($this->img_folder . $img_fname, $content);
     $this->file_data = array('file_name' => $img_fname, 'file_path' => $this->img_folder);
     return TRUE;
 }

function traerCapacitacionMenu()
{
    $db = Conectar();
    $sql = "SELECT * FROM capacitacion ORDER BY id_cap DESC";
    $resultado = $db->query($sql);
    while ($data = $resultado->fetch_object()) {
        echo '

		<article class="CursosImagenes col" >
      	<h2><a class="LinkCursos" href="curso_detalle.php?id=' . $data->id_cap . '#aqui" >' . length($data->titulo) . '</a></h2>
      
      	<a href="curso_detalle.php?id=' . $data->id_cap . '#aqui" rel="nofollow" >   
        <div class="ImagenCurso"><img class="SacarSeccionCelular" src="upload/' . $data->imagen . '"/><div class="HoverCursos"><div class="SimboloMas"></div></div></div>
      	</a>
    	</article>
    	';
    }
    return $resultado;
}

 /**
  * Replaces all old string within the expression with new strings.
  *
  * @param String|\Tbm\Peval\Types\String $expression
  *            The string being processed.
  * @param String|\Tbm\Peval\Types\String $oldString
  *            The string to replace.
  * @param String|\Tbm\Peval\Types\String $newString
  *            The string to replace the old string with.
  *
  * @return mixed The new expression with all of the old strings replaced with new
  *         strings.
  */
 public function replaceAll(string $expression, string $oldString, string $newString)
 {
     $replacedExpression = $expression;
     if ($replacedExpression != null) {
         $charCtr = 0;
         $oldStringIndex = $replacedExpression->indexOf($oldString, $charCtr);
         while ($oldStringIndex > -1) {
             // Remove the old string from the expression.
             $buffer = new StringBuffer($replacedExpression->subString(0, oldStringIndex)->getValue() . $replacedExpression->substring($oldStringIndex + $oldString . length()));
             // Insert the new string into the expression.
             $buffer . insert($oldStringIndex, $newString);
             $replacedExpression = buffer . toString();
             $charCtr = $oldStringIndex + $newString->length();
             // Determine if we need to continue to search.
             if ($charCtr < $replacedExpression->length()) {
                 $oldStringIndex = $replacedExpression->indexOf($oldString, $charCtr);
             } else {
                 $oldStringIndex = -1;
             }
         }
     }
     return $replacedExpression;
 }