如何使用php将数组分成两个相等的部分?

how to split an array in to two equal parts using array_slice() in PHP ?

如何在PHP中使用array_slice()将数组分成两个相等的部分?

This is my requirement:

First array contains: 0-1200

第一个数组包含:0 - 1200

Second array contains: 1200-end

第二个数组包含:1200 -结束

5 个解决方案

#1

From the documentation for array_slice, all you have to do is give array_slice an offset and a length.

从array_slice的文档中，您所要做的就是给array_slice一个偏移量和长度。

In your case:

在你的例子:

$firsthalf = array_slice($original, 0, 1200);
$secondhalf = array_slice($original, 1200);

In other words, this code is telling array_slice:

换句话说，这个代码告诉array_slice:

take the first 1200 records;
then, take all the records starting at index 1200;

Since index 1200 is item 1201, this should be what you need.

由于索引1200是项目1201，这应该是你需要的。

#2

$quantity = count($original_collection);

$collection1 = array_slice($original_collection, 0, intval($quantity / 2), true);
$collection2 = array_diff_key($original_collection, $collection1);

#3

$array1 = array_slice($array, 0, 1199);
$array2 = array_slice($array, 1200);

#4

I think array_chunk would be easier, especially as you don't need to know how many elements are in the array.

我认为array_chunk会更简单，尤其是您不需要知道数组中有多少元素。

array array_chunk ( array $input , int $size [, bool $preserve_keys = false ] )

<?php
$input_array = array('a', 'b', 'c', 'd', 'e');
$size = ceil(count($input_array)/2));
print_r(array_chunk($input_array, $size));
print_r(array_chunk($input_array, $size, true));
?>

#5

$array1 = array_slice($input, 0, 1200);
$array2 = array_slice($input, 1200);

#1