在数组未设置范围键

问题描述

我怎样才能取消设置范围说，在这样的一个数组？

70到80之间的键

  [63] =＆GT;计算机科学和信息
[64] =＆GT;牙科
[65] =＆GT;发展研究
[66] =＆GT;戏剧，舞蹈和表演艺术
[67] =＆GT;地球系统与环境科学
[68] =＆GT;经济学和计量经济学
[69] =＆GT;教育
[70] =＆GT;电气与电子工程
[71] =＆GT;英语语言文学
[72] =＆GT;流行病学和公共卫生
[73] =＆GT;欧洲研究
[74] =＆GT;法国
[75] =＆GT;一般工程及矿产和放大器;矿业工程
[76] =＆GT;地理与环境研究
[77] =＆GT;地理与环境研究
[78] =＆GT;德国，荷兰和斯堪的纳维亚语言
[79] =＆GT;卫生服务研究
[80] =＆GT;历史
[81] =＆GT;艺术，建筑和设计史
[82] =＆GT;伊比利亚和拉丁美洲的语言
[83] =＆GT;感染与免疫
[84] =＆GT;意大利
[85] =＆GT;法
[86] =＆GT;图书馆和信息管理
[87] =＆GT;语言学
[88] =＆GT;机械，航空和制造工程
[89] =＆GT;冶金与材料
[90] =＆GT;中东和非洲研究
 

解决方案

有没有真正的捷径是：

 为（$ I = 70; $ I＆LT; = 80; $ I ++）
    未设置（$数组[$ i]）;
 

How can i unset a range of keys between say 70 to 80 in an array like this?

[63] => Computer Science and Informatics
[64] => Dentistry
[65] => Development Studies
[66] => Drama, Dance and Performing Arts
[67] => Earth Systems and Environmental Sciences
[68] => Economics and Econometrics
[69] => Education
[70] => Electrical and Electronic Engineering
[71] => English Language and Literature
[72] => Epidemiology and Public Health
[73] => European Studies
[74] => French
[75] => General Engineering and Mineral & Mining Engineering
[76] => Geography and Environmental Studies
[77] => Geography and Environmental Studies
[78] => German, Dutch and Scandinavian Languages
[79] => Health Services Research
[80] => History
[81] => History of Art, Architecture and Design
[82] => Iberian and Latin American Languages
[83] => Infection and Immunology
[84] => Italian
[85] => Law
[86] => Library and Information Management
[87] => Linguistics
[88] => Mechanical, Aeronautical and Manufacturing Engineering
[89] => Metallurgy and Materials
[90] => Middle Eastern and African Studies

解决方案

There isn't really a shortcut to this:

for ($i = 70; $i <= 80; $i++)  
    unset($array[$i]);

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