PHP爆炸事成陣列，但在

Question

之間我有一個字符串我要清理並放入數組，這樣我可以在MySQL通過它可以搜索使用的值。

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// Here's one example of what the string might have: 
$string1 = "(1) *value1* *value2*; (2) *value3* *value4* *value5*; (3) *value6*"; 
// And here's another possibility: 
$string2 = "*value1* *value2* *value3* *value4*"; 

// I want to remove all the "(#)" stuff, and explode all the values into an array 
// This is what I have so far: 
// $string can be like the examples $string1 or $string2 

$string_clean = str_replace("* *","",trim(preg_replace("/\((\d)\)/i", "", $string))); 
$my_array = explode('*', trim($string_clean, '*')); 

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然而，這就是我得到：

Array ([0] => value1 [1] => [2] => value2 [3] => [4] => value3 [5] => [6] => value4 [7] => [8] => value5) 

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我想我可以隨便找一個函數從數組中刪除所有空的項目，但我想知道是否有更有效的方法來做到這一點？

Answer 1

您需要preg_match_all()：

preg_match_all('#\*([^*]+)\*#', $string, $matches); 
$result = $matches[1]; 
// $result is array('value1', 'value2', ...) 

這會發現所有*something*和*之間返回字符串。