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Filter to add drop caps to first letter of blog posts in WordPress. Add to your active theme's functions.php.
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/* | |
Drop cap first letter of each post. | |
*/ | |
function add_drop_caps($content) | |
{ | |
global $post; | |
//only posts | |
if(!empty($post) && $post->post_type == "post") | |
{ | |
//find first p tag with a letter following it | |
$match = getMatches("/\<p\>[A-Z]/i", $content, true); | |
if(!empty($match)) | |
{ | |
$letter = str_replace("<p>", "", $match); | |
$dropcap = '<p><span class="dropcap">' . $letter . '</span>'; | |
$content = str_replace_once($match, $dropcap, $content); | |
} | |
} | |
return $content; | |
} | |
add_filter('the_content', 'add_drop_caps', 30); | |
add_filter('the_excerpt', 'add_drop_caps', 30); | |
/* | |
Helper for Getting RegExp Matches | |
*/ | |
function getMatches($p, $s, $firstvalue = FALSE, $n = 0) | |
{ | |
$ok = preg_match_all($p, $s, $matches); | |
if(!$ok) | |
return false; | |
else | |
{ | |
if($firstvalue) | |
return $matches[$n][0]; | |
else | |
return $matches[$n]; | |
} | |
} | |
/* | |
Replace a string once. | |
From: http://php.net/manual/en/function.str-replace.php#86177 | |
*/ | |
function str_replace_once($search, $replace, $subject) { | |
$firstChar = strpos($subject, $search); | |
if($firstChar !== false) { | |
$beforeStr = substr($subject,0,$firstChar); | |
$afterStr = substr($subject, $firstChar + strlen($search)); | |
return $beforeStr.$replace.$afterStr; | |
} else { | |
return $subject; | |
} | |
} |
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