Manjeet Kashyap Blog: January 2017

Tuesday 10 January 2017

how to get 20 KM area Result in php .

$distance = (20); // value is km convent 1 miles = 1.60934 km
$radius = 6371;

$maxlat = $latitude + (($distance / $radius) * 180.0 / M_PI);
$minlat = $latitude - (($distance / $radius) * 180.0 / M_PI);

$maxlng = $longitude + (($distance / $radius / cos($latitude * M_PI /180.0)) * 180.0 / M_PI);
$minlng = $longitude - (($distance / $radius / cos($latitude * M_PI /180.0)) * 180.0 / M_PI);

Use Query--->>

SELECT * FROM table_name WHERE latitude BETWEEN $minlat AND $maxlat AND longitude BETWEEN $minlng AND $maxlng

Saturday 7 January 2017

Image upload without refresh page in php

index.php

<html>
<head>
<title>Image upload without refresh page</title>
</head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery.form/3.51/jquery.form.js"></script>
<script type="text/javascript" >
$(document).ready(function() {
$(document).on('change', '#photoimg', function(){
$("#preview").html('');
$("#preview").html('<img src="loader.gif" alt="Uploading...."/>'); //download load loading image
$("#imageform").ajaxForm({
target: '#preview'
}).submit();
});
});
</script>
<style>
body
{
font-family:arial;
}
.preview
{
width:200px;
border:solid 1px #dedede;
padding:10px;
}
#preview
{
color:#cc0000;
font-size:12px
}
</style>
<body>
<div style="width:600px">
<form id="imageform" method="post" enctype="multipart/form-data" action='upload.php'>
Upload your image <input type="file" name="photoimg" id="photoimg" />
<br>
<input type="text" id='tt' name='tt'>
</form>
<div id='preview'>
</div>
</div>
</body>
</html>

upload.php

<?php
$path = "img/"; // set image upload path
$valid_formats = array(".jpg", ".png", ".gif", ".bmp"); // set formate
if(isset($_POST) and $_SERVER['REQUEST_METHOD'] == "POST")
{
//echo $name = $_POST['tt'];//use to image description. and you can do also save in database.
$name = $_FILES['photoimg']['name'];
$size = $_FILES['photoimg']['size'];
if(strlen($name))
{
$fileExt = substr(strrchr($name, '.'), 0);
if(in_array($fileExt,$valid_formats))
{
if($size<(1024*1024))
{
$actual_image_name = time().$fileExt; // create image unique name
$tmp = $_FILES['photoimg']['tmp_name'];
if(move_uploaded_file($tmp, $path.$actual_image_name))
{
// you can fire query for insert image discription or more fields whoes you create in form.
echo "<img src='img/".$actual_image_name."' class='preview'>";
}
else
echo "failed";
}
else
echo "Image file size max 1 MB";
}
else
echo "Invalid file format..";
}
else
echo "Please select image..!";
exit;
}

?>

Tuesday 3 January 2017

how to create Your Promo Code in php.

$characters = array(
"A","B","C","D","E","F","G","H","J","K","L","M",
"N","P","Q","R","S","T","U","V","W","X","Y","Z",
"1","2","3","4","5","6","7","8","9");
$keys = array();
while(count($keys) < 8) {
$x = mt_rand(0, count($characters)-1);
if(!in_array($x, $keys)) {
$keys[] = $x;
}
}
foreach($keys as $key){
$random_chars .= $characters[$key];
}
echo $random_chars;

Sunday 1 January 2017

how to calculate age time formate function in php

<?php

create function :

function get_timeago($ptime)
{
    $estimate_time = time() - $ptime;

    if( $estimate_time < 1 )
    {
        return 'just now';
    }

    $condition = array(
                12 * 30 * 24 * 60 * 60 => 'year',
                30 * 24 * 60 * 60       => 'month',
                24 * 60 * 60            => 'day',
                60 * 60                 => 'hour',
                60                      => 'minute',
                1                       => 'second'
    );

    foreach( $condition as $secs => $str )
    {
        $d = $estimate_time / $secs;


        if( $d >= 1 )
        {
            $r = round( $d );
            return 'about ' . $r . ' ' . $str . ( $r > 1 ? 's' : '' ) . ' ago';
        }
    }
}

use function

$timeago = get_timeago(strtotime($datee['date']));

?>