Question

我有$value= 24153; 我有一个字段，可以包含一个或多个值，例如{"id":"2","value":["3"]}，或者像{"id":"2","value":["3","4"]}或{"id":"2","value":["3","4","2"]} 我有这个正则表达式工作正常，但如果ONE值存在则返回。我需要改进这个正则表达式，以便在字段中有多个值。

REGEXP BINARY \'(.*{"id":"2","value":\["[^\"]*['.$value.'][^\"]*",?)+\]}.*\'

Answer 1

这里有一个可以做你想要的正则表达式 - 但我必须同意你的常识 - 存储json然后使用正则表达式从中提取数据令人作呕

REGEXP BINARY \'(.*{"id":"2","value":\[("[^\"]*",)*"'.$value.'"(,"[^\"]*")*)+\]}.*\'

Answer 2

$value = 4;
$subject_a = '{"id":"2","value":["4"]}';
$subject_b = '{"id":"2","value":["1","4","1","1"]}';
$subject_c = '{"id":"2","value":["1","1","1","1","1","44","1","1"]}';
$pattern = '/{"id":"2","value":\[("|\d|,)*"' . $value . '"("|\d|,)*\]/';

$matches[0] = preg_match($pattern,$subject_a);
$matches[1] = preg_match($pattern,$subject_b);
$matches[2] = preg_match($pattern,$subject_c);

echo '<pre>';
var_dump($matches);
echo '</pre>';

结果将是：

array(3) {
   [0]=> int(1)
   [1]=> int(1)
   [2]=> int(0)
}

REGEXP BINARY sql语法问题

2 个答案: