- var_dump: documentation ( source)
- get_defined_vars: documentation ( source)
- print_r: documentation ( source)
- in_array: documentation ( source)
<?php
$rose = "black";
${"rose"} = "white";
$rose = "red";
print_r(${"rose"});
echo "\n\n";
/**
Parse error: syntax error, unexpected '123' (T_LNUMBER), expecting variable (T_VARIABLE) or '{' or '$'
$123 = 456;
var_dump($123);
**/
${"123"} = "white";
var_dump(${"123"});
echo '<pre>';
//var_dump(get_defined_vars());
echo in_array(get_defined_vars(),"123"),"\n";
echo "\n\n";
$arr{"246a"} = 99;
var_dump($arr);
$o = (object) $arr;
var_dump($o);
echo $o->{"246a"},"\n\n";
class x extends stdClass {
public $val;
function Show($n){
$this->val = $n;
return $this->val;
}
}
$s = new x();
echo $s->Show(100),"\n";
var_dump($s);
var_dump($s instanceof stdClass);