check if string start with a specific sub-string in PHP

<?php
// check if  string starts with a specific sub-string
 
function startsWith($myString, $needle)
{
    return !strncmp($myString, $needle, strlen($needle));
}
  
    $mystr="Bombo anas";
    if(startsWith($mystr,"B")==1) 
	   echo "String starts with B";
	 
	else 
	   echo "String doesn't start with B";
	   
?>