将字符串爆炸成相等的部分

Question

$str =  "Hello fri3nd, you're looking good today!  What a Great day this is!  How     fancy and cool!";
$pieces = explode(" ",$str, 3);

print_r($pieces);

所以这给了我$pieces[0] = 'Hello', $ pieces [1] ='fri3nd'... and the rest of the string is all shoved into $ pieces [3]`。如何在每3或4个单词中爆炸？

Answer 1

也许：

<?php
$str =  "Hello fri3nd, you're looking good today!  What a Great day this is!  How     fancy and cool!";

$array = array_map(create_function('$a', 'return implode(" ", $a);'), array_chunk(preg_split('/\s+/', $str), 3));
var_dump($array);

说明：

• 首先将字符串拆分为任何（组合）空格：preg_split
• 然后'拆分'结果数组：array_chunk
• 然后，您使用implode对任何结果字词组
应用array_map

Answer 2

使用php str_split功能： -

$pieces = str_split( $str, 3);