Question

我正在尝试使用preg_match_all从字符串中提取主题标签，并使用foreach循环对数组值执行MySQL插入。但显然它还没有工作，这就是我在这里的原因。

我的代码就像：

<?php

$text = "this has a #hashtag a  #badhash-tag and a #goodhash_tag";
preg_match_all('/#[^\s]*/i', $text, $matches);

foreach($matches as $value){
    echo $value.'<br>'; // right now, im just trying to see if i can get individual array values and then will have to perform sql query here
}

?>

我知道这有点天真，但我无法弄清楚。请指导。

Answer 1

使用此for循环，$matches是多维数组

 foreach($matches[0] as $value){
      echo $value.'<br>'; // right now, im just trying to see if i can get individual array values and then will have to perform sql query here
 }

工作示例http://codepad.viper-7.com/iEGvgh

输出：

#hashtag
#badhash-tag
#goodhash_tag

Answer 2

试试这个：

$text = "this has a #hashtag a  #badhash-tag and a #goodhash_tag";
preg_match_all('/#(?P<hash>\w+)/', $text, $matches);

 foreach($matches['hash'] as $val){
    echo $val;
    echo "<br>";
 }

执行mysql查询循环遍历preg_match_all返回的数组

2 个答案: