[PHP] Sample regex and function to wrap line breaks in p tags
![[PHP] Sample regex and function to wrap line breaks in p tags](img/ogp.png)
I wanted to output a string containing line breaks wrapped in p tags (paragraphs) in WordPress.
So, here's an introduction to a minimal regex and function.
Table of Contents
Simple
function br_to_p ($int){
$int = str_replace(array("\r\n", "\r", "\n"), "\n", $int); // Unify line break codes to \n
$array = explode("\n", $int); // Split by \n into an array
$str = '';
foreach($array as $p){
$str .= '<p>'.$p.'</p>'."\n"; // Wrap each element with p
}
return $str; // Output
}Input Example
Input text
Line breaks
will be wrapped in p tagsOutput Example
<p>Input text</p>
<p>Line breaks</p>
<p></p>
<p>will be wrapped in p tags</p>If there are blank lines, they will become empty p tags.
It's up to you to decide if this is good or bad.
Handling Consecutive Line Breaks
Here's also a version that excludes empty lines using regex.
function br_to_p ($int){
$int = str_replace(array("\r\n", "\r", "\n"), "\n", $int); // Unify line break codes to \n
$array = preg_split("/\n+/", $int); // Split by \n into an array
$str = '';
foreach($array as $p){
$str .= '<p>'.$p.'</p>'."\n"; // Wrap each element with p
}
return $str; // Output
}Input Example
Input text
Line breaks
will be wrapped in p tagsOutput Example
<p>Input text</p>
<p>Line breaks</p>
<p>will be wrapped in p tags</p>
Comments
If you found something different in your environment, or know a better way, please feel free to send a comment.
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