php explode 函数使用详细理解

<!DOCTYPE html>
<html>
<body>

<?php

function dump($str=''){
echo '<pre>';
var_dump($str);
exit;
};
//explode()函数

//explode(separator,string,limit)
//separator:分割标志符
//string:被分割的字符串
//limit :分割后返回的元素数目

$str = 'one,two,three,four';

print_r(explode(',' , $str));

// 零 limit
print_r(explode(',',$str,0));

// 正的 limit 分成两组
print_r(explode(',',$str,2));

// 负的 limit 除了最后两组
print_r(explode(',',$str,-2));

//运行结果如下：
Array
(
[0] => one
[1] => two
[2] => three
[3] => four
)
Array
(
[0] => one,two,three,four
)
Array
(
[0] => one
[1] => two,three,four
)
Array
(
[0] => one
[1] => two
)

?>

</body>
</html>

原文链接：https://blog.csdn.net/qq_39487835/article/details/80840283