代码示例:(标识:demo_php_func_string_implode2)
<!DOCTYPE html>
<html>
<body>

<?php
$arr = array('Hello','World!','I','love','Shanghai!');
echo implode(" ",$arr)."<br>";
echo implode("+",$arr)."<br>";
echo implode("-",$arr)."<br>"; 
echo implode("X",$arr);
?>

</body>
</html>
运行结果: