使用'preg_replace_callback'时，从Textarea显示新行段落

Question

Ok, so i had the paragraphs displaying fine when pulled out of a database. Using CSS i had the line...

white-space: pre-line;

New lines for paragraphs were displaying great.

But then i added some code to make the first letter of every sentence capitalized. The code is...

$description = htmlentities(strip_tags($_POST['desc']), ENT_QUOTES);
$desc = preg_replace_callback('/([.!?])\s*(\w)/', function ($matches) {
    return strtoupper($matches[1] . ' ' . $matches[2]);
},  ucfirst(strtolower($description)));

So although it worked it now does not render the new lines for new paragraphs. In other words it is ignoring the CSS line above or something.

Any ideas??

Answer 1

It's not ignoring the CSS, there's no new line anymore.

See you are matching what you want right but you are replacing without the new line characters the first ([.!?]) and the second (\w) groups of the expression.

Change the expression to '/([.!?])(\s*)(\w)/' then the return statement to strtoupper($matches[1] . $matches[2] . $matches[3])

It should work.