ucfirst() uppercases the first character according to PHP's string behavior. For multilingual text, use Unicode-aware string handling where required.
\welcome to plus2net.com= 'welcome to plus2net.com';
echo \welcome to plus2net.com.'<br>';
echo \"After changing : \".ucfirst(welcome to plus2net.com);
To change all the first chars ( of all words ) of a string we have to use ucwords() Author & Instructor at plus2net
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