Php find word in text using regular expression
<p>I want to find the whole words in text not a sub string.
I have written following code.</p>

<pre><code>$str = 'its so old now.';
$a   = 'so';
if (stripos($str,$a) !== false) {
 echo 'true';
} else {
 echo 'false';
}

str1 = 'its so old now.';
str2 = 'it has some issue.';
</code></pre>

<p>I want to find word 'so' in text. it give true in both the string. But I want true in first case only because in second string 'so' contains in 'some' words.</p>

<p>Thanks in advance</p>