探讨 PHP 访问控制器与运算符优先级_PHP教程

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<?<span php><span><span php by www.jbxue.com><span>
<span class><span foo><span private> <span> = 'hdj'<span><span public> <span function><span getname><span return> <span>-><span name><span class> Bar <span extends><span foo><span public> <span> = 'deeka'<span><span> = <span new><span bar><span var_dump>(<span>-><span name><span var_dump>(<span>-><span getname>?></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>

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对属性或方法的访问控制，是通过在前面添加关键字 public、protected 或 private 来实现的。由 public 所定义的类成员可以在任何地方被访问；由 protected 所定义的类成员则可以被其所在类的子类和父类访问（当然，该成员所在的类也可以访问）；而由 private 定义的类成员则只能被其所在类访问。

<span> <?<span php><span> <span><span><span> <span php><span> <span by www.jbxue.com><span> <span>
<span> <span> = 3<span><span> <span> = 6<span><span> <span if>(<span> = 5 || <span> = 7<span><span> <span echo> <span>.'<br />'<span><span> <span>++<span><span> <span>++<span><span> <span><span> <span var_dump>(<span>, <span><span><span> <span echo> '<br /> $a = (5 || $b = 7)'<span><span> <span echo> '<hr />'<span><span> <span> = 3<span><span> <span> = 6<span><span> <span> = 1<span><span> <span if>(<span> = 5 || <span> = 7 && <span> = 10<span><span> <span>++<span><span> <span>++<span><span> <span><span> <span var_dump>(<span>, <span>,<span><span><span> <span echo> '<br /> && 比 || 高'<span><span> <span echo> '<hr />'<span><span> <span> = 3<span><span> <span> = 6<span><span> <span> = 1<span><span> <span if>(<span> = 0 || <span> = 7 && <span> = 10<span><span> <span>++<span><span> <span>++<span><span> <span><span> <span var_dump>(<span>, <span>,<span><span><span> <span echo> '<br /> '<span><span> <span echo> '<hr />'<span><span> <span class><span foo><span> <span private> <span> = 'hdj'<span><span> <span public> <span function><span getname><span> <span return> <span>-><span name><span> <span><span> <span><span> 
<span> <span class> Bar <span extends><span foo><span> <span public> <span> = 'deeka'<span><span> <span><span> 
<span> <span> = <span new><span bar><span> <span var_dump>(<span>-><span name><span> <span var_dump>(<span>-><span getname><span> ?></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>