php-Arrays函数-range-建立一个包含指定范围单元的数组_PHP教程

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Release: 2016-07-13 17:51:33
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range() 函数

【功能】
该函数将返回数组中从low到high的单元,
包含他们本身,如果low>high,则序列从high到low
【使用范围】
>=3.0.8、php4、php5
【使用】
range(first,second,step)
first/必需/规定数组元素最小值
second/必需/规定数组元素最大值
step/可选/规定元素之间的间隔/默认为1/该参数是php5之后加的
【示例】
[php]
print_r( range( 0, 5 ) );
print_r( range( 5, 1 ) );
print_r( range( 0, 5, 2 ) );
print_r( range( 0, 5, 3) );
/*
Array
(
[0] => 0
[1] => 1
[2] => 2
[3] => 3
[4] => 4
[5] => 5
)
Array
(
[0] => 5
[1] => 4
[2] => 3
[3] => 2
[4] => 1
)
Array
(
[0] => 0
[1] => 2
[2] => 4
)
Array
(
[0] => 0
[1] => 3
)
*/


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www.bkjia.com true http://www.bkjia.com/PHPjc/478195.html TechArticle range() 函数 【功能】 该函数将返回数组中从low到high的单元, 包含他们本身,如果lowhigh,则序列从high到low 【使用范围】 =3.0.8、php4、php5...
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