<?php
Class World {
public $greeting;
public $rand; // no value
private $priv;
public function __construct() {
$this->greeting = 'Hello';
}
}
$w = new World();
$wr = (array) $w;
list($greet_exists, $greet_isset_o, $greet_isset_a, $greet_a_e,$greet_empty) = [
json_encode(property_exists($w,'greeting')), json_encode(isset($w->greeting)),
json_encode(isset($wr['greeting'])), json_encode(array_key_exists('greeting', $wr)), json_encode(empty($w->greeting))
];
echo
"Greeting: {$wr['greeting']}; Exists: $greet_exists; Is prop set: $greet_isset_o; Is index set: $greet_isset_a; Array index: $greet_a_e; Empty: $greet_empty".PHP_EOL;
list($rand_exists,$rand_isset_o,$rand_isset_a,$rand_a_e,$rand_empty) = [
json_encode(property_exists($w,'rand')),json_encode(isset($w->rand)),
json_encode(isset($wr['rand'])),json_encode(array_key_exists('rand', $wr)), json_encode(empty($w->rand))
];
echo "Random: {$wr['rand']}; Exists: $rand_exists; Is prop set: $rand_isset_o; Is index set: $rand_isset_a; Array index: $rand_a_e; Empty: $rand_empty".PHP_EOL;
list($priv_exists,$priv_isset_o,$priv_isset_a,$priv_a_e,$priv_empty) = [
json_encode(property_exists($w,'priv')),json_encode(isset($w->priv)),
json_encode(isset($wr['priv'])),json_encode(array_key_exists('priv', $wr)), json_encode(empty($w->priv))
];
echo "Private: {$wr['priv']}; Exists: $priv_exists; Is prop set: $priv_isset_o; Is index set: $priv_isset_a; Array index: $priv_a_e; Empty: $priv_empty".PHP_EOL;
preferences:
84.54 ms | 402 KiB | 5 Q