add transform xhtml

app/functions/xhtmltransform.php

@@ -0,0 +1,57 @@
+<?php
+
+function pagehtml($html, $page, $limit){
+
+    if ($page == 1){
+        $start = $limit;
+        $rstart = 0;
+    }    
+    else {
+        $prevpage = $page - 1;
+        $start = $prevpage * $limit;
+        $r_start = endparagraf($html, $start);
+    }
+    
+    $endpos = $page * $limit;
+    $r_end = endparagraf($html, $endpos); 
+    $len = $r_end - $r_start;
+
+    return substr($html, $r_start, $len);
+        
+}
+
+
+
+function endparagraf($html, $pos){
+
+    $end = strpos($html, '</p>', $pos);
+
+    if ($end)
+        return $end;
+    else
+        return false;
+
+}
+
+
+
+
+//удаляем xtml
+function convert2html($xfile){
+
+    if (!file_exists($xfile)){
+        return '';
+    }
+
+    $xhtml = file_get_contents($xfile);
+
+    $result = str_replace('</body>', '', $xhtml);
+    $result = str_replace('</html>', '', $xhtml);
+
+    if ($pos = strpos('<body', $result)){
+        $result = substr($result, $pos+1);
+    }
+
+    return $result;
+
+}