PHP 关于访问控制的和运算符优先级介绍

class Foo
{
    private $name = 'hdj';
    public function getName(){
        return $this->name;
    }
}

class Bar extends Foo
{
    public $name = 'deeka';
}

$bar = new Bar;
var_dump($bar->name);
var_dump($bar->getName());

<?php
$a = 3;
$b = 6;
if($a = 5 || $b = 7){
    echo $b.'<br />';
    $a++; 
    $b++;
}
var_dump($a, $b);
echo '<br /> $a = (5 || $b = 7)';

echo '<hr />';
$a = 3;
$b = 6;
$c = 1;
if($a = 5 || $b = 7 && $c = 10){
    $a++; 
    $b++;
}
var_dump($a, $b,$c);
echo '<br /> && 比 || 高';

echo '<hr />';
$a = 3;
$b = 6;
$c = 1;
if($a = 0 || $b = 7 && $c = 10){
    $a++; 
    $b++;
}
var_dump($a, $b,$c);
echo '<br /> ';
echo '<hr />';

class Foo {
    private $name = 'hdj';
    public function getName() {
        return $this->name;
    }
}

class Bar extends Foo {
    public $name = 'deeka';
}

$bar = new Bar;
var_dump($bar->name);
var_dump($bar->getName());