PHP 5 Function

1.  GET NETWORK parameter

$_POST, $_GET, $REQUEST

content:
exampel: $_GET['name']



ref:  1 2 3

2. isset() 

Content: check variable is set
ex:    isset($_GET['action'])

3.  print_r($array,  true)

parameter: true, meaning not output to stdout
content: output $array content
ex:   error_log(print_r($array, true))


ref: 1

4.  htmlentities

content: change special word  to the htmlspecail word


<?php
$str = "A 'quote' is <b>bold</b>";

// Outputs: A 'quote' is &lt;b&gt;bold&lt;/b&gt;
echo htmlentities($str);

// Outputs: A &#039;quote&#039; is &lt;b&gt;bold&lt;/b&gt;
echo htmlentities($str, ENT_QUOTES);
?>

ref 1

5. pcntl_fork

ref 1 2 3 4 5

6.  Reflect class

----

 class ClassOne
{
    protected $arg1;
    protected $arg2;

    //Contructor
    public function __construct($arg1, $arg2)
    {
        $this->arg1 = $arg1;
        $this->arg2 = $arg2;
    }

    public function echoArgOne()
    {
        echo $this->arg1;
    }

}

$str = "One";
$className = "Class".$str;
$class = new \ReflectionClass($className);
$instance = $class->newInstanceArgs(array("Banana", "Apple"));
$instance->echoArgOne();
---------

7.  Array Function pass by

<?php
        //Enter your code here, enjoy!

$array = array("1" => "PHP code tester Sandbox Online",
              "foo" => "bar", 5 , 5 => 89009,
              "case" => "Random Stuff: " . rand(100,999),
              "PHP Version" => phpversion()
              );
           
assignEmpty($array, "ipo");

function assignEmpty($array, $field)
{
    $array[$field] = 100;
 
}

$array["ipb"] = 77;

print_r($array);

8.  PHP Redirect

if (/*Condition to redirect*/){
  //You need to redirect
  header("Location: http://www.yourwebsite.com/user.php"); /* Redirect browser */
  exit();
 }
else{
  // do some
}

9. PHP html add the code

in .htaccess

AddType application/x-httpd-php .html .htm

ref 1

9 PHP auth

https://www.php.net/manual/en/features.http-auth.php


ref
http://ms7.fhsh.tp.edu.tw/php5c/features.http-auth.html


10. php varaible request

https://stackoverflow.com/questions/520132/does-static-variables-in-php-persist-across-the-requests

https://softwareengineering.stackexchange.com/questions/276512/is-this-a-race-condition

10 PHP stdclass and array change 

$query = new stdClass();
$query->age = 10;
$query->name = "andy";

echo $query->{"age"};
echo $query->{"name"};
/////////////////////////
$qArray = (array) $query;
echo $qArray{"age"};
echo $qArray{"name"};