我有文本:
I have new blue car
I have new red and blue cars
如何使用php从第一行中删除我想要的单词?
例如:
$text = preg_replace("/^(blue>){1}/", "", $text);
结果应该是:
I have new car
I have new red and blue cars
我想要一个删除"p br"的例子,它是可能的。
<p></p><br/>I have new blue car
I have new red and blue cars
下面将找到第一行,将该行的"blue"字替换为空(删除它),去掉标记并删除前导/尾随空格。
- 只删除整个单词,例如"blues"中的"blue"
- 如果在第一行中找不到单词,将不会从后面的行中删除
- 不会从以下行中剥离标记
代码:
$text = "<p></p><br/>I have new blue car
I have new <b>red<b> and blue cars";
$word = 'blue';
$text = preg_replace_callback(
'/.*$/m', // Match single line
function ($matches) use ($word) {
// Remove word ('b = word boundary), strip tags and trim off whitespace
return trim(
strip_tags(
preg_replace('/'b' . $word. ''s*'b/', '', $matches[0])
)
);
},
$text,
1 // Match first line only
);
echo $text, PHP_EOL;
输出:
I have new car
I have new <b>red<b> and blue cars