PHP中关于strstr函数查找 /n特殊字符?

我现在的代码 找不到 /n 字符

请问如何找到嗯?

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扔上来的代码

$xml = simplexml_load_file("ZH-CNstrings.xml");

// echo $xml->getName() . "<br />";
$cou = 1;
foreach($xml->children() as $child)
{        echo $child->getName();
    if($child->getName() == "string-array"){
        foreach ($child as $key2 => $value2) {
            echo "<input type='text' name='".$value2["name"]."' value='".$value2."' style=' width: 500px; ' /><br>";
        }
    }else{

        if (strstr($child,"color") 
            or strstr($child,"%1")
            or strstr($child,"%s")
            or strstr($child,"\n")
            ) {
            echo "<b style='color: #f0f;'>有 特殊字符 </b>";
        $cou++;
    }

    echo "<input type='text' name='".$child["name"]."' value='".$child."' style=' width: 500px; ' /><br>";
}
}

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试试 \n