I need php code for Back Button

Can someone please tell me the php code.
Simple <back> button (link to back page or given web address>

Thanks

 

You could use..

echo "<a href=\"" . $_SERVER['HTTP_REFERER'] . "\">Back</a>";

PHP:

Not always reliable though.

 

Why in PHP? You can do it in JavaScript:

 

<?php

require_once("config.php");

// path being dynamically requested
if(!empty($_REQUEST['src'])) {
    if(file_exists(stripslashes(PATH.$_REQUEST['src'])))
        $src = urldecode(stripslashes(PATH.$_REQUEST['src']));
    else
        $src = null;
        
    // extra validation
    $src = stristr($src, '..') ? null : $src;
}

// see if we're working with a thumbnail or not
$size = !empty($_REQUEST['size']) && $_REQUEST['size'] == 'full' ? $_REQUEST['size'] : null;

// draw watermarked & thumbnail images
function draw_image($src) {
    global $size;
    list($width, $height, $type, $attr) = getimagesize($src);
    $img = imagecreatefromstring(file_get_contents($src));

    if($size == 'full') {
        $red = imagecolorallocate($img, 0xFF, 0x00, 0x00);
        imagestring($img, 5, 3, 3, WATERMARK, $red);
    } else {
        $lowest = min(THMBWIDTH / $width, THMBHEIGHT / $height);
        if($lowest < 1) {
            $smallwidth = floor($lowest*$width);
            $smallheight = floor($lowest*$height);
            $tmp = imagecreatetruecolor($smallwidth, $smallheight);
            imagecopyresized($tmp, $img, 0, 0, 0, 0, $smallwidth, $smallheight, $width, $height);
            imagedestroy($img);
            $img = $tmp;
        }
    }
    
    switch($type) {
        case 1:
        header("Content-type: image/gif");
        imagegif($img);
        break;

        case 2:
        header('Content-Type: image/jpeg');
        imagejpeg($img, '', 100);
        break;

        case 3:
        header("Content-type: image/png");
        imagepng($img);
        break;
    }
    imagedestroy($img);
}

if(!empty($src)) {
    draw_image($src);
} else {
    header("Content-type: image/png");
    $img = imagecreatetruecolor(THMBWIDTH, THMBHEIGHT);
    $black = imagecolorallocate($img, 0x00, 0x00, 0x00);
    $white = imagecolorallocate($img, 0xFF, 0xFF, 0xFF);
    imagestring($img, 5, 3, 3,  "NO IMAGE", $white);
    imagepng($img);
    imagedestroy($img);
}


?>

PHP:

 

I have tried both , php and javascript but not working

 

i usually follow this method and it works fine