将字符串转换为数组

Question

我有一个字符串 - 类似于

$string = 'key1=value1, key2=value2, key3=value3';

如何从给定的字符串中获取数组，如下所示？

$array = array(
    'key1' => 'value1',
    'key2' => 'value2',
    'key3' => 'value3',
);

Answer 1

parse_str(str_replace(", ","&",$string),$array);

Answer 2

一个天真的解决方案可能是：

$string = 'key1=value1, key2=value2, key3=value3';

$array = array();
foreach (explode(', ', $string) as $couple) {
    list ($key, $value) = explode('=', $couple);
    $array[$key] = $value;
}

var_dump($array);

结果你得到了预期的数组：

array
  'key1' => string 'value1' (length=6)
  'key2' => string 'value2' (length=6)
  'key3' => string 'value3' (length=6)

Answer 3

这正是parse_str所做的。在您的情况下，您需要将逗号替换为&：

$string = 'key1=value1, key2=value2, key3=value3';
$array = parse_str(str_replace(', ', '&', $string));

// Yields
array(
    'key1' => 'value1',
    'key2' => 'value2',
    'key3' => 'value3',
)

Answer 4

$a = explode(', ', $string);
$array = array();
foreach($a as $v){
    $x = explode('=', $v);
    $array[$x[0]] = $x[1];
}