如何使用preg_match_all
获取所有不在括号中的文本?我需要使用preg_match_all
的原因是因为我想得到每个单词的索引。
给出句子:
先生,您今天是怎么回事?
我可以提取( )
里面的所有单词,它有效。我怎样才能分别获得( )
以外的所有文字?
preg_match_all('/\[t-(.*?)\]/', $this->target, $targetWords, PREG_OFFSET_CAPTURE);
输出:
Array
(
[0] => Array
(
[0] => are
[1] => 47
),
[0] => Array
(
[0] => today
[1] => some number
)
)
注意:我已经了解preg_split
:
$outsideParenthesis = preg_split('/\[.*?\]/', $this->target);
但这不允许我维持索引。
注2:提供我的最终目标可能会有所帮助:
我想采取一系列自定义降价。对于每个单词,我想生成指定其类型和内容的单词对象。
原因是,我想向前端发送一个单词对象数组,这样我就可以遍历数组并生成带有类的HTML元素,这样我就可以根据需要应用样式。
我希望能够在其中指定任何降价,例如,
先生,您今天[今天是什么时候]你好吗?
在t-是目标的情况下,k-是关键。
所以我想要的最终数组看起来像:
[
[
type => 'normal'
content => 'Hello how '
],
[
type => 'target'
content => 'are'
],
[
type => 'normal'
content => ' you'
]
[
type => 'key'
content => 'today'
]
[
type => 'normal'
content => ', Sir?'
]
]
这是我现在的wordObjects函数:
private function setWordObjects($array, $type)
{
return array_map(function ($n) use ($type) {
return [
'type' => $type,
'content' => $n[0],
'index' => $n[1]
];
}, $array[1]);
}
扩展解决方案
$s = 'Hello how [t- are] you [k- today], Sir?';
$types = ['t-' => 'target', 'k-' => 'key'];
$splitted = preg_split('/\[([tk]- [^]]+)\]/', $s, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_OFFSET_CAPTURE);
$result = [];
foreach ($splitted as $v) {
[$content, $pos] = $v;
$k = substr($content, 0, 2);
$is_delim = isset($types[$k]);
$result[] = array_combine(['type', 'content', 'index'],
[$is_delim? $types[$k] : 'normal',
$is_delim? substr($content, 3) : $content,
$is_delim? $pos + 3 : $pos]);
}
print_r($result);
输出:
Array
(
[0] => Array
(
[type] => normal
[content] => Hello how
[index] => 0
)
[1] => Array
(
[type] => target
[content] => are
[index] => 14
)
[2] => Array
(
[type] => normal
[content] => you
[index] => 18
)
[3] => Array
(
[type] => key
[content] => today
[index] => 27
)
[4] => Array
(
[type] => normal
[content] => , Sir?
[index] => 33
)
)
随着preg_match_all
$str = 'Hello how [t- are] you [k- today], Sir?';
$types = ['' => 'normal', 't' => 'target', 'k' => 'key'];
if ( preg_match_all('~ (?| \[ (?<type>[^]-]+) - \h (?<content>[^]]+) ]
| () ([^[]+) ) ~x', $str, $matches, PREG_SET_ORDER) ) {
foreach ($matches as &$m) {
unset($m[0], $m[1], $m[2]);
$m['type'] = $types[$m['type']];
}
print_r($matches);
}