php 分割和合并数组函数

1.php分割数组函数

$str = "Hello world. It's a beautiful day.";
print_r (explode(" ",$str));

输出：

Array
(
[0] => Hello
[1] => world.
[2] => It's
[3] => a
[4] => beautiful
[5] => day.
)

 

2.php合并数组函数

 

$array = array('lastname', 'email', 'phone');
$comma_separated = implode(",", $array);

echo $comma_separated; // lastname,email,phone

// Empty string when using an empty array:
var_dump(implode('hello', array())); // string(0) ""