Returns value of

title

element from

$xml

function value_in($element_name, $xml, $content_only = true) {
    if ($xml == false) {
        return false;
    }
    $found = preg_match('#<'.$element_name.'(?:\s+[^>]+)?>(.*?)'.
            '</'.$element_name.'>#s', $xml, $matches);
    if ($found != false) {
        if ($content_only) {
            return $matches[1];  //ignore the enclosing tags
        } else {
            return $matches[0];  //return the full pattern match
        }
    }
    // No match found: return false.
    return false;
}

$title = value_in('title', $xml);

We need to sort the array by

price

value

$inventory = array(

   array("type"=>"fruit", "price"=>3.50),
   array("type"=>"milk", "price"=>2.90),
   array("type"=>"pork", "price"=>5.43),

);

The solution is to use

array_multisort

function

$price = array();
foreach ($inventory as $key => $row)
{
    $price[$key] = $row['price'];
}
array_multisort($price, SORT_DESC, $inventory);

In PHP 5.5 or later

array_column

function can be used

$price = array_column($inventory, 'price');

array_multisort($price, SORT_DESC, $inventory);

The default

thousands_separator

is

,

which is 4th parameter. Without passing something else for the

thousands_separator

parameter, the

latency

was equal to

1,511.68525

The following PHP code caused problem in MySQL

$this->latency = number_format(microtime(1)-$_SESSION['startTime'], 5);

MySQL error:

SQLSTATE[01000]: Warning: 1265 Data truncated for column 'latency' at row 1

Solution to the problem is to specify the 4th parameter as an empty string

""

to get

latency

equal to

1511.68525

$this->latency = number_format(microtime(1)-$_SESSION['startTime'], 5, '.', '');

Postman request

Authorization type: Basic Auth
Username: usr
Password: pwd

PHP cURL request

curl_setopt($ch, CURLOPT_USERPWD, "usr:pwd");

Default

time limit

for

file_get_contents

is 60 seconds which we can increase using

timeout

property of

http

object

$opts = [
    "http" => [
        "method" => "GET",
        "timeout"=> 1200,
        "header" => 
            "Channel-Name: ".CHANNEL."\r\n" .
            "Authorization: ".AUTHORIZATION."\r\n"
    ]
];
// DOCS: https://www.php.net/manual/en/function.stream-context-create.php
$context = stream_context_create($opts); //, false, $context

$startTime = microtime(1);
$res = file_get_contents($url . $query, false, $context);