Php-mysql Course

It is possible to send POST data with file_get_contents() and get the returned content, by using it with the stream_context_create() function.
The stream_context_create($opt) creates and returns a stream context with any options supplied in the $opt array.
- $opt is an array of associative arrays in the format: $arr['wrapper']['option'] = $value .

Example stream_context_create() and file_get_contents()

- Click on the code to select it.
$postdata = http_build_query(['name'=>'some name', 'pass'=>'password']);  //data to send 'name=some+name&pass=password'
$opts = [
 'http' =>
  [
   'method'=> 'POST',  // GET or POST
   'header' => 'Content-type: application/x-www-form-urlencoded'. PHP_EOL .'Content-Length: '. strlen($postdata). PHP_EOL,
   'content' => $postdata
  ]
];
$send_data  = stream_context_create($opts);
$cnt = file_get_contents('http://domain.net/page.php', false, $send_data);  //send data and get the returned content

echo $cnt;
- The http_build_query($arr) function generates a URL-encoded query string from the $arr, returns a string like this: 'key1=val1&key2=val2'.
- The value of the key 'method' must be in UPPERCASE (GET or POST).
- The 'header' key contains http headers that must be send to "page.php".

Daily Test with Code Example

HTML
CSS
JavaScript
PHP-MySQL
What attribute makes an option from <select> selected?
checked="checked" selected="selected" disabled="disabled"
<select name="a_name">
 <option value="val1">Option 1</option>
 <option value="val2" selected="selected">Option 2</option>
</select>
What CSS value allows to create color gradients for background?
contain repeat-x linear-gradient
#id {
  background: linear-gradient(top left, #1f1, #fff, #11f);
}
What statement creates an array in JavaScript?
[] {} new Object()
var arr = [1, "CoursesWeb.net", "MarPlo.net"];
alert(arr[2]);
Indicate the PHP function used to redirect to other page.
function() header() switch()
header("Location: http://coursesweb.net/");
exit;
Send POST data with file_get_contents

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