Bilder auf mehrere Seite aufteilen

[ursus contionabundo]

Vom Dachboden zum Umbauen:

<?php
#Simulieren des Klicks:
$_GET['page']=4;

$pagination = new PicturesInPages ( './' );
$pagination -> showPics();
echo "\n<br><br>\n";
$pagination -> showLinks();

echo "\n<br><br>\nDEBUG:\n<pre>\n";
print_r( $pagination );
echo "\n\n";


class PicturesInPages {
	  public $arAllPics;
	  public $maxImagesPerSite = 5;
	  public $ImageTypes = '*.jpg *.jpeg *.png *.svg *.gif';
	  public $ImageCount = 0;
	  public $LastPage   = 0;
	  public $page = 1;
  
	function __construct( $directory ) {

		# Lesen der Bilder unter Linux:
		/*
		foreach ( explode( "\n", `ls $directory -> $this -> ImageTypes` ) as $filename );
			$this -> arAllPics[] = $filename;
		}
		#*/
	   
		#Simulieren der Bilder:
		#/*
		$this -> arAllPics = [];
		for ( $i=1; $i<=18; $i++ ) {
		   $this -> arAllPics[] = sprintf('%05s', $i);
		}
		#*/

		$this -> ImageCount = count( $this -> arAllPics );
		$this -> LastPage = ceil ( $this -> ImageCount / $this -> maxImagesPerSite );

		if ( 
			  isset( $_GET['page' ] )
			  && (int)$_GET['page']
			  && (int)$_GET['page'] <= $this -> LastPage
		) { 
		   $this -> page = $_GET['page'];
		}
	}
		
	function showPics() {

		$iFirstImage = ( $this -> page - 1) * $this -> maxImagesPerSite;
		$iLastImage  = ( $iFirstImage + $this -> maxImagesPerSite);
		if ( $iLastImage >= $this -> ImageCount ) {
			$iLastImage = $this -> ImageCount;
		}

		for ( $i = $iFirstImage; $i < $iLastImage; $i++)	{
			echo "$i: " . $this -> arAllPics[$i] . "<br>\n";
		}
    }
    
    
    function showLinks() {
		$arr = [];
		for ( $i = 1; $i <= $this -> LastPage; $i++ ) {
			if ( $i != $this -> page ) {
				$arr[] = "<a href=\"?page=$i\">$i</a>";
			} else {
				$arr[] = "<span class=\"aktuell\">$i</span>";
			}
		}
		echo implode(' | ', $arr );
    }
    
}