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php数组键值用法实例分析

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2016-06-06 20:08:411019browse

这篇文章主要介绍了php数组键值用法,实例分析了php数组中键值的系统自动分配原理与使用技巧,具有一定参考借鉴价值,需要的朋友可以参考下

本文实例讲述了php数组键值用法。分享给大家供大家参考。具体分析如下:

先看一个数组:

6, 3 => 7, 'a' => 4, 11, // key = 6 (整个数组中整型键索引最大的值是5) '8' => 2, // key = 8 (字符串健'8'转换为8) '02' => 77, // key = '02'(注意不是2) 0 => 12 /*前面值为10的键被赋予0,而后面重新定义了0键的值为12,, 从而覆盖了前面默认的0键值*/ ); // empty array $empty = array(); ?>

如果用print_r($switching)打印出来的话结果为:

Array ( [0] => 12 [5] => 6 [3] => 7 [a] => 4 [6] => 11 [8] => 2 [02] => 77 )

注意,两位数的02被排在后面。

希望本文所述对大家的php程序设计有所帮助。

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