how to print string plus variable in php

114

$variableName = 'Ralph';
echo 'Hello '.$variableName.'!';

&lt;?php
$a&nbsp;=&nbsp;"Hello&nbsp;";
$b&nbsp;=&nbsp;$a&nbsp;.&nbsp;"World!";&nbsp;//&nbsp;now&nbsp;$b&nbsp;contains&nbsp;"Hello&nbsp;World!"

$a&nbsp;=&nbsp;"Hello&nbsp;";
$a&nbsp;.=&nbsp;"World!";&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//&nbsp;now&nbsp;$a&nbsp;contains&nbsp;"Hello&nbsp;World!"
?&gt;

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how to print string plus variable in php

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