Returning JSON from a PHP Script

<?php

header('Content-Type: application/json');
echo json_encode(array( 'status' => 'success', 'uniqueid' => 1111 ));

?>

http://php.net/manual/en/function.json-encode.php

http://stackoverflow.com/questions/4064444/returning-json-from-a-php-script

PHP UPLOAD Error Messages Explained

 Messages Explained ¶

PHP returns an appropriate error code along with the file array. The error code can be found in the error segment of the file array that is created during the file upload by PHP. In other words, the error might be found in $_FILES['userfile']['error'].

UPLOAD_ERR_OK

Value: 0; There is no error, the file uploaded with success.

UPLOAD_ERR_INI_SIZE

Value: 1; The uploaded file exceeds the upload_max_filesize directive in php.ini.

UPLOAD_ERR_FORM_SIZE

Value: 2; The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form.

UPLOAD_ERR_PARTIAL

Value: 3; The uploaded file was only partially uploaded.

UPLOAD_ERR_NO_FILE

Value: 4; No file was uploaded.

UPLOAD_ERR_NO_TMP_DIR

Value: 6; Missing a temporary folder. Introduced in PHP 5.0.3.

UPLOAD_ERR_CANT_WRITE

Value: 7; Failed to write file to disk. Introduced in PHP 5.1.0.

UPLOAD_ERR_EXTENSION

Value: 8; A PHP extension stopped the file upload. PHP does not provide a way to ascertain which extension caused the file upload to stop; examining the list of loaded extensions with phpinfo() may help. Introduced in PHP 5.2.0.

Simple MYSQL update script

update script

<?php


require("setting.php");
$link = mysqli_connect($setting["host"],$setting["username"],$setting["password"],$setting["db"]);

/* check connection */
if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}


$query = "update users set comment ='viewed' where id ='1'";


if ($result = mysqli_query($link, $query)) {

   echo " Update OK ";

}
else {

printf(" failed: %s\n", mysqli_error($link));

}
mysqli_close($link);
?>

////Setting Sscript

<?php

//db conection settings

$setting=array("username"=>"root","password"=>"113","host"=>"127.0.0.1","db"=>"users");

?>

Uploading multiple files

Example #1 Uploading multiple files

<?php
$uploads_dir = '/uploads';
foreach ($_FILES["pictures"]["error"] as $key => $error) {
    if ($error == UPLOAD_ERR_OK) {
        $tmp_name = $_FILES["pictures"]["tmp_name"][$key];
        $name = $_FILES["pictures"]["name"][$key];
        move_uploaded_file($tmp_name, "$uploads_dir/$name");
    }
}?>

Notes ¶

Note:

move_uploaded_file() is both safe mode and open_basedir aware. However, restrictions are placed only on the destination path as to allow the moving of uploaded files in which filename may conflict with such restrictions. move_uploaded_file() ensures the safety of this operation by allowing only those files uploaded through PHP to be moved.

Warning

If the destination file already exists, it will be overwritten.