将字符串转换多维数组

Question

我想 转换这个字符串：

$credit_packages_string = "300,0.25|1000,0.24|3000,0.22|4000,0.20|5000,0.18|6000,0.16|7000,0.14"; 

这个数组：

$credit_packages = array( array('credit_amount'=> 300, 
     'price_per_credit'=>0.25), 
     array('credit_amount'=> 1000, 
     'price_per_credit'=>0.24), 
     array('credit_amount'=> 3000, 
     'price_per_credit'=>0.22), 
     array('credit_amount'=> 4000, 
     'price_per_credit'=>0.20), 
     array('credit_amount'=> 5000, 
     'price_per_credit'=>0.18), 
     array('credit_amount'=> 6000, 
     'price_per_credit'=>0.16), 
     array('credit_amount'=> 7000, 
     'price_per_credit'=>0.14) 
    ); 

你会如何以最有效的方式做到这一点？

Answer 1

不使用正则表达式，你需要一些这样的循环使用正则表达式可能是最好的

$credit_packages_string = "300,0.25|1000,0.24|3000,0.22|4000,0.20|5000,0.18|6000,0.16|7000,0.14"; 
preg_match_all('~(?P<credit_amount>\d+),(?P<price_per_credit>[\d\.]+)~', $credit_packages_string, $matches, PREG_SET_ORDER); 
print_r($matches); 

Link to code

Answer 2

$array = explode(',', explode('|', $credit_packages_string)); 

这只会给你一个数值数组。如果你真的想要“credit_amount”和“price_per_credit”键，添加以下内容：

foreach($i as &$array) { 
    $i['credit_amount'] = $i[0]; 
    $i['price_per_credit'] = $i[1]; 
} 

Answer 3

可以使用explode为做到这一点;

$result = array(); 
$credits = explode('|',$credit_packages_string); 
foreach($credits as $credit) { 
     $credit_part = explode(',',$credit); 
     $result[] = array('credit_amount' => $credit_part[0], 
          'price_per_credit' => $credit_part[1]); 
} 

Working link