PHP - 从文本中隔离第一个字母

Question

I have a set of articles, in which I want to style the first letter from each article (with CSS).

the articles usually start with a paragrah, like:

<p> bla bla </p>

So how could I wrap the first letter from this text within a <span> tag ?

Answer 1

<?php

$str = '<p> bla bla </p>';
$search = '_^<p> *([\w])(.+) *</p>$_i';
$replacement = '<p><span>$1</span>$2</p>';

$new = preg_replace( $search, $replacement, $str );

echo $new."
";