的preg_match話後面數字

Question

我有以下字符串：

Query_time: 77.571216 Lock_time: 2.793139 Rows_sent: 20 Rows_examined: 4654071 

我怎麼會去把每數到一個變量？ 如：

$query_time = 77.571216; 
$lock_time  = 2.793139; 
$rows_sent  = 20; 
$rows_examined = 4654071; 

Answer 1

if (preg_match('/Query_time: ([0-9.]+) Lock_time: ([0-9.]+) Rows_sent: ([0-9.]+) Rows_examined: ([0-9.]+)/', $string, $matches)) { 
    list($query_time, $lock_time, $rows_sent, $rows_examined) = 
      array_slice($matches, 1); 
} 

Answer 2

$str = 'Query_time: 77.571216 Lock_time: 2.793139 Rows_sent: 20 Rows_examined: 4654071'; 
list($null, $query_time, $lock_time, $rows_sent, $rows_examined) = preg_split('/\S+:/',$str); 

Answer 3

幾乎相同的答案k102有輕微的變化，我使用的標誌PREG_SPLIT_NO_EMPTY，所以沒有必要必須在的開始一個$空VAR列表:)

$str = 'Query_time: 77.571216 Lock_time: 2.793139 Rows_sent: 20 Rows_examined: 4654071'; 
list($query_time, $lock_time, $rows_sent, $rows_examined) = preg_split('/\S+:/',$str, 0, PREG_SPLIT_NO_EMPTY);