Question

我正在尝试从Wordpress生成的数据库的文本字符串中删除一些html。

我想要这个：

Marnie Stanton led us through the process first and then everyone went crazy. 
[caption id="attachment_76" align="alignnone" width="191"] One of the work stations[/caption]
[caption id="attachment_78" align="alignnone" width="300"] The group is getting some great results[/caption]
[caption id="attachment_83" align="alignnone" width="224"] You can see the prints multiplying[/caption]

变成这个：

Marnie Stanton led us through the process first and then everyone went crazy.

所以我想要的是从第一个[caption]到最后一个[/caption]要删除的所有内容。

我从这开始：

(\[caption\s+?[^]]+\])

仅删除第一个标记。

Answer 1

你可能想要使用这样的东西

$string = 'Marnie Stanton led us through the process first and then everyone went crazy. 
[caption id="attachment_76" align="alignnone" width="191"] One of the work stations[/caption]
[caption id="attachment_78" align="alignnone" width="300"] The group is getting some great results[/caption]
I want to keep this !
[caption id="attachment_83" align="alignnone" width="224"] You can see the prints multiplying[/caption]';

$new_string = preg_replace('#\s*\[caption[^]]*\].*?\[/caption\]\s*#is', '', $string);
echo $new_string;

<强>输出：

Marnie Stanton首先引导我们完成整个过程然后每个人都发疯了。我想保留这个！

<强>解释

修饰符is：i表示匹配大小写不敏感，s表示匹配新行与点.
\s*：匹配空格0次或以上
\[caption：匹配[caption
[^]]*：匹配除] 0次或更多次以外的任何内容
\]：匹配]
.*?\[/caption\]：匹配任何内容，直到[/caption]找到（并匹配[/caption]）
\s*：匹配空格0次或以上

Online demo

Answer 2

因为看起来你只想要字符串的开头，我不会使用正则表达式而是字符串函数：

$pos = stripos($your_string, '[caption');
$result = substr($your_string, 0, $pos);

Answer 3

看起来你可以通过换行符来爆炸字符串，然后走第一行......

<?php

$str = <<<EOD
Marnie Stanton led us through the process first and then everyone went crazy.
[caption id="attachment_76" align="alignnone" width="191"] One of the work stations[/caption]
[caption id="attachment_78" align="alignnone" width="300"] The group is getting some great results[/caption]
[caption id="attachment_83" align="alignnone" width="224"] You can see the prints multiplying[/caption]
EOD;

$lines = explode("\n", trim($str));

echo $lines[0]; # Marnie Stanton led us through the process first and then everyone went crazy.

Answer 4

[caption]是shortcode的示例。您可以使用Wordpress删除所有短代码＆＃39; strip_shortcodes();功能。

$text = 'Marnie Stanton led us through the process first and then everyone went crazy. 
[caption id="attachment_76" align="alignnone" width="191"] One of the work stations[/caption]
[caption id="attachment_78" align="alignnone" width="300"] The group is getting some great results[/caption]
I want to keep this !
[caption id="attachment_83" align="alignnone" width="224"] You can see the prints multiplying[/caption]';

$text = strip_shortcodes($text);
echo $text;

这将输出：

Marnie Stanton首先引导我们完成整个过程然后每个人都发疯了。我想保留这个！

[caption] documentation

strip_shortcodes documentation

正则表达式删除[标题]

4 个答案: