我想捕获下面html字符串中方括号内的文本。 但是我下面的正则表达式并没有得到'image'和imagealt',而是返回'image]“alt =”[imagealt'来代替。如果我从字符串中取出alt =“[imagealt]”,它会像我期望的那样返回。正则表达式在方括号中查找字符串[]
$html = '<h2>[title]</h2>
<div class="content"><img src="[image]" alt="[imagealt]" /></div>
<div class="content">[text]</div>';
preg_match_all("^\[(.*)\]^",$html,$fields, PREG_PATTERN_ORDER);
echo "<pre>";
print_r($fields);
echo "</pre>";
Array
(
[0] => Array
(
[0] => [title]
[1] => [image]" alt="[imagealt]
[2] => [text]
)
[1] => Array
(
[0] => title
[1] => image]" alt="[imagealt
[2] => text
)
)