php将字符串转化为数组的几种方法

php哪些函数可以将字符串转化为数组，下面web建站小编给大家介绍一下str_split()函数、explode()函数、preg_split()函数等方法。

1、利用str_split()函数–将字符串转化为数组

<?php
header('content-type:text/html;charset=utf-8');   
$str = 'hello';
var_dump($str);
$arr1=str_split($str);
var_dump($arr1);
$arr2=str_split($str,2);
var_dump($arr2);
?>

2、利用explode()函数–将字符串转化为数组

<?php
header('content-type:text/html;charset=utf-8');   
$str = 'hypertext language programming';
var_dump($str);
$arr=explode(" ",$str);
var_dump($arr);
?>

3、利用preg_split()函数–将字符串转化为数组

<?php
header('content-type:text/html;charset=utf-8');   
$str = '1 2 3 4,5 6-7 8=9';
var_dump($str);
$arr=preg_split('/ /', $str, -1, PREG_SPLIT_OFFSET_CAPTURE);
var_dump($arr);
?>

4、json_encode()和json_decode()函数–将对象转化为数组

<?php
class gfg {
    public  $geeks = 0.02;
    public $for = 1;
    public $Geeks = "php";
    public  $GEEKS;
    public  $e;
}

$example = new gfg;

var_dump(json_decode(json_encode($example),TRUE));
?>

5、get_object_vars()函数–将对象转化为数组

class gfg {
    private $geeks = 0.02;
    public $for = 1;
    public $Geeks = "php";
    private $GEEKS;
    static $e;

    public function example() {
        var_dump(get_object_vars($this));
    }
}

$example = new gfg;

var_dump(get_object_vars($example));

$example->example();
?>