<?php $foo = 'hello form world. i am windows. i am linux '; $pieces = explode(".", $foo); for($i=0;$i<count($pieces);$i++){ var_dump($pieces[$i]); echo $pieces[$i].'<br>'; $pieces[$i] = ucfirst($pieces[$i]); echo $pieces[$i].'<br>'; } $imp = implode(".", $pieces); echo $imp;
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