Array met meerdere regels wegschrijven

<?
$fp = fopen ("http://www.zuid-west.nevobo.nl/standvol.htm","r"); //just for testing

define("SKIPFIRST", 2495); //skip fist y lines
define("SKIPLAST", 24623); //skip last x lines
$linecount = 0;
$buffer = array();
for($i=0; $i<SKIPLAST; $buffer[$i++]=false); // (*)
$bp = 0; //buffer pointer (points to oldest element in the buffer)

while (!feof($fp)) {
$line = fgets($fp, 4096); // read next line
if(!$line) continue; //skip empty lines (**)

if ($linecount++ < SKIPFIRST) continue; // skip fist y lines

$oldline = $buffer[$bp]; // retreive old line
$buffer[$bp] = $line; // put in new line
$bp = ($bp+1)%SKIPLAST; // set pointer to the oldes line in the buffer

if($oldline){ //NOTE: the first SKIPLAST times $oldline will be false (see *), but also when an empty line is found (this will however not be the case because of (**))

// do something with the line
echo $oldline;

$file ="file";
$handle = fopen($file, "w");
fwrite($handle, $oldline);
fclose ($handle);
}
}
?> 

<?
$fp = fopen ("http://www.zuid-west.nevobo.nl/standvol.htm","r"); //just for testing
 
define("SKIPFIRST", 2495); //skip fist y lines
define("SKIPLAST", 24623); //skip last x lines
$linecount = 0;
$buffer = array();
for($i=0; $i<SKIPLAST; $buffer[$i++]=false); // (*)
$bp = 0; //buffer pointer (points to oldest element in the buffer)
 
while (!feof($fp)) {
$line = fgets($fp, 4096); // read next line
if(!$line) continue; //skip empty lines (**)
 
if ($linecount++ < SKIPFIRST) continue; // skip fist y lines
 
$oldline = $buffer[$bp]; // retreive old line
$buffer[$bp] = $line; // put in new line
$bp = ($bp+1)%SKIPLAST; // set pointer to the oldes line in the buffer
 
if($oldline){ //NOTE: the first SKIPLAST times $oldline will be false (see *), but also when an empty line is found (this will however not be the case because of (**))
 
// do something with the line
echo $oldline;
 
$file ="file";
$handle = fopen($file, "w");
fwrite($handle, $oldline);
fclose ($handle);
}
}
?>

<?php
$fp = fopen ("http://www.zuid-west.nevobo.nl/standvol.htm","r"); //just for testing

define("SKIPFIRST", 2495); //skip fist y lines
define("SKIPLAST", 24623); //skip last x lines
$linecount = 0;
$buffer = array();
for($i=0; $i<SKIPLAST; $buffer[$i++]=false);
$bp 		= 0;
$file ="test.txt";
$handle = fopen($file, "w");
while (!feof($fp)) {
	$line 			= fgets($fp, 4096) . "\n";
	if(!$line) continue;
	if ($linecount++ < SKIPFIRST) continue;
	$oldline 		= $buffer[$bp];
	$buffer[$bp] 	= $line;
	$bp 			= ($bp+1)%SKIPLAST;
		
	fwrite($handle, $line);
}
fclose ($handle);
?>

<?php
$fp = fopen ("http://www.zuid-west.nevobo.nl/standvol.htm","r"); //just for testing
 
define("SKIPFIRST", 2495); //skip fist y lines
define("SKIPLAST", 24623); //skip last x lines
$linecount = 0;
$buffer = array();
for($i=0; $i<SKIPLAST; $buffer[$i++]=false);
$bp 		= 0;
$file ="test.txt";
$handle = fopen($file, "w");
while (!feof($fp)) {
	$line 			= fgets($fp, 4096) . "\n";
	if(!$line) continue;
	if ($linecount++ < SKIPFIRST) continue;
	$oldline 		= $buffer[$bp];
	$buffer[$bp] 	= $line;
	$bp 			= ($bp+1)%SKIPLAST;
 
	fwrite($handle, $line);
}
fclose ($handle);
?>