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php类常量用法实例分析

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Release: 2016-06-06 19:51:48
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这篇文章主要介绍了php类常量用法,实例分析了php中类常量的概念、特性与相关使用技巧,需要的朋友可以参考下

本文实例讲述了php类常量用法。分享给大家供大家参考。具体如下:

'; echo Foo::BAR, '
'; $obj = new Foo(); echo $obj->getConstant(), '
'; echo $obj->getConstantValue(), '
'; echo Foo::getConstantValue(); // 以上均输出bar class Bar extends Foo { const BAR = 'foo'; // 重写父类常量 public static function getMyConstant() { return self::BAR; } public static function getParentConstant() { return parent::BAR; } } echo Bar::getMyConstant(); // foo echo Bar::getParentConstant(); // bar

希望本文所述对大家的php程序设计有所帮助。

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