PHP 循环遍历数组.将第一个元素移动到最后一个元素 - PHP Cycle through array. Move the first element to the last

PHP Cycle through array. Move the first element to the last

只是想如果有人发现它的用途，我想分享这个。

基本上，我需要一个HTML颜色列表来循环/循环。所以我需要删除数组的第一个元素，将其放在末尾，然后获取当前的 HTML 颜色。

给定以下数组：

$colors = array(  
    "#2265fa", "#b61d1e", "#53b822", "#a9d81c", "#d6e9f5", "#43cc7d", "#e3159a", 
    "#80c85e", "#17b303", "#989240", "#014c07", "#d265f3", "#22bbb9", "#6c69a9", 
    "#7ea13a", "#0dcea2", "#99c27d", "#41405b", "#731801"
);

这就是我想出的。当然，会有数百种方法可以做到这一点。这是我的看法。

# Array_shift returns the value it takes off the beginning of the array. 
# And I merely append this to the end of the array
$colors[] = array_shift($colors);
# Using current I am able to get the current first element of the array back
echo current($colors);

在这种情况下，数组的当前索引将是"#b61d1e"。愿你在某处发现这很有用。