<?php
CurlHandle|false curl_init(?string $url = null)
where,
$url = If provided, the CURLOPT_URL option will be set to its value.
?>
<?php
$c01 = curl_init();
echo "<b>USE of print_r:</b><br><br>";
print_r($c01);
echo '<br><br>';
echo "<b>USE of var_dump:</b><br><br>";
var_dump($c01);
echo '<br><br>'
// USE of echo is not permitted
// echo $c01;
?>
<?php
$c02 = curl_init('localhost');
echo "<b>USE of print_r:</b><br><br>";
print_r($c02);
echo '<br><br>';
echo "<b>USE of var_dump:</b><br><br>";
var_dump($c02);
echo '<br><br>'
// USE of echo is not permitted
// echo $c02;
?>
<?php
$c03 = curl_init('https://www.google.com');
echo "<b>USE of print_r:</b><br><br>";
print_r($c03);
echo '<br><br>';
echo "<b>USE of var_dump:</b><br><br>";
var_dump($c03);
?>
<?php
$a04 = 'https://google.com';
$c04 = curl_init($a04);
var_dump($c04);
?>