range() 函數(shù)創(chuàng)建并返回一個包含指定范圍的元素的數(shù)組。

語法

range(first,second,step) 電腦技術www.boydavid.com 

說明

該函數(shù)創(chuàng)建一個數(shù)組，包含從 first 到 second （包含 first 和 second）之間的整數(shù)或字符。如果 second 比 first 小，則返回反序的數(shù)組。

<?php
$number = range(0,5);
print_r ($number);
?>  

Array
(
[0] => 0
[1] => 1
[2] => 2
[3] => 3
[4] => 4
[5] => 5
)  

<?php
$number = range(0,50,10);
print_r ($number);
?>  

Array
(
[0] => 0
[1] => 10
[2] => 20
[3] => 30
[4] => 40
[5] => 50
)  

<?php
$letter = range("a","d");
print_r ($letter);
?> 電腦常識www.boydavid.com 

Array
(
[0] => a
[1] => b
[2] => c
[3] => d
)