get api and store the converted api to array and save it in directory using curl

file1.php
<?php
$arrData = [['mobileno'=>'09181234522','message'=>'1this is a test message.'],['mobileno'=>'09181234567','message'=>'2this is a test message.']];
echo json_encode($arrData);


file2.php
<?php
$ch = curl_init();
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_URL,'http://192.168.50.17/file1.php');
$result=curl_exec($ch);
curl_close($ch);
$message = json_decode($result, true);
foreach($message as $key=> $value){
    $length = 10;
    $unique_number= substr(str_shuffle('0123456789abcdefghijklmnopqrstuvwxyz'),1,$length);
    file_put_contents('send'.$unique_number,$value['mobileno']."\n"."\n".$value['message']);
}


https://stackoverflow.com/questions/14193131/give-777-permission-to-dynamically-created-file-in-php