What is the function to convert php object to array?

In PHP, the function to convert an object into an array is "get_object_vars()". The get_object_vars() function can return an associative array composed of object attributes, with the syntax format "get_object_vars (object)".

The operating environment of this tutorial: Windows 7 system, PHP version 7.1, DELL G3 computer

In PHP, you can use the get_object_vars() function to convert the object into an array.

get_object_vars — Returns an associative array composed of object properties. Syntax format:

get_object_vars ( object $obj ) : array

Returns an associative array composed of attributes defined in the object specified by obj.

Note:

In versions prior to PHP 4.2.0, if variables declared in the obj object instance are not assigned a value, they will not be in the returned array . After PHP 4.2.0, these variables will be assigned null values ​​as key names.

Example:

<?php
class Point2D {
    var $x, $y;
    var $label;

    function Point2D($x, $y)
    {
        $this->x = $x;
        $this->y = $y;
    }

    function setLabel($label)
    {
        $this->label = $label;
    }

    function getPoint()
    {
        return array("x" => $this->x,
                     "y" => $this->y,
                     "label" => $this->label);
    }
}

// "$label" is declared but not defined
$p1 = new Point2D(1.233, 3.445);
print_r(get_object_vars($p1));

$p1->setLabel("point #1");
print_r(get_object_vars($p1));

?>

Output:

 Array
 (
     [x] => 1.233
     [y] => 3.445
     [label] =>
 )

 Array
 (
     [x] => 1.233
     [y] => 3.445
     [label] => point #1
 )

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