arrays - PHP - refreshing page and showing different rows in a table -

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 <?php   //if pagenum isset figure out start(7 rows per page * page num +1    $pagenum = isset($_get['pagenum']) ? (int)$_get['pagenum'] : 0;    $startrow = $pagenum == 0 ? 0 : ($pagenum * 7 + 1);     $endrow = $startrow + 7;        $count = 0;  while (($data = fgetcsv($handle, 1000, ";")) !== false) { if($count >= $startrow)     echo ' aantal vervangingen: 30';  $row = 1;   if (($handle = fopen("vervangingen.csv", "r")) !== false) {  echo '<table border="1">';    while (($data = fgetcsv($handle, 1000, ";")) !== false) {     $num = count($data);     if ($row == 1) {         echo '<tr>';     }else{         echo '<tr>';     }      ($c=0; $c < $num; $c++) {         //echo $data[$c] . "<br />\n";         if(empty($data[$c])) {            $value = "&nbsp;";         }else{            $value = $data[$c];         }         if ($row == 1) {             echo '<th>'.$value.'</th>';         }else{             echo '<td>'.$value.'</td>';         }     }      if ($row == 1) {         echo '</tr></thead><tbody>';     }else{         echo '</tr>';     }     $row++; }  echo '</tbody></table>'; fclose($handle);   }         if($count == $endrow) {     //wait 3 seconds use javascript redirect.     sleep(3);     echo '<script>window.loaction.href="theurl?pagenum='.($pagenum +1).'"</script>'; }   }   ?>

i made table in php gets data .csv file. question is, how let php show first 7 rows, should refresh page , show following 7 rows, there 30 in total. once has shown rows, should still refresh page , start on again.

how do this? know how refresh php page, showing 7 rows per refresh quite hard. help?

greetings

the following (tested) uses php sessions , js settimeout.
interesting, wonder if ever use effect. (i unable save $handle session variable.)

<?php // z1.php file, z1.csv data file session_start(); echo <<<eod <body onload="settimeout('f1();',3000);"> <script type="text/javascript"> function f1() { window.location.replace("z1.php"); }  </script> eod;  if (isset($_session['sessrow1st'])) { $row1st = $_session['sessrow1st']; } else { $row1st = 1; } $handle = fopen("z1.csv", "r"); if ($handle === false) { exit("open error"); }; echo "<table border='1'>\n"; $rownum = 0; while (($data = fgetcsv($handle, 1000, ";")) !== false) {   $rownum += 1;   if ($rownum < $row1st) continue;   if ($rownum > $row1st+6) break;    $numcols = count($data);   echo '<tr>';   ($c=0; $c < $numcols; $c++) {     if(empty($data[$c])) { $value = "&nbsp;"; }     else { $value = $data[$c]; }     echo '<td>'.$value.'</td>'; }   echo "</tr>\n"; } echo '</table></body>'; if (feof($handle)) { $rownum = 1; } fclose($handle); $_session['sessrow1st'] = $rownum; ?>

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