我需要不同的标志，以了解网页和其他网页在php？

我试图实现这样的标志区分，请找出一个问题，谢谢 到目前为止，我如何更改徽标

@if($title == 'About' ){
    <img src = "files/images/logo_wta_white.png" srcset = "files/images/logo_wta_white.png 1x, files/images/logo_wta_white@2x.png 2x" alt = "logo_wta_white">
@else
    <img src = "files/images/logo_wta.png" srcset = "files/images/logo_wta.png 1x, files/images/logo_wta@2x.png 2x" alt = "logo_wta">
@endif

@if（$title==“About”）{
@否则
@恩迪夫

用于核心php

if(basename($_SERVER['PHP_SELF']) == "about.php"){ /* basename($_SERVER['PHP_SELF']) Returns The Current PHP File Name */
<img src = "files/images/logo_wta_white.png" srcset = "files/images/logo_wta_white.png 1x, files/images/logo_wta_white@2x.png 2x" alt = "logo_wta_white">
}else{
<img src = "files/images/logo_wta.png" srcset = "files/images/logo_wta.png 1x, files/images/logo_wta@2x.png 2x" alt = "logo_wta">
}

if（basename（$\u SERVER['PHP\u SELF']）==“about.PHP”）{/*basename（$\u SERVER['PHP\u SELF']）返回当前的PHP文件名*/
}否则{
}

哪里定义了“$title”变量？使用哪个值？使用哪个框架？您可以使用url比较来完成。

<?php
if(strcmp($title ,"About") ==0)
{?>
<img src="files/images/logo_wta_white.png" 
srcset ="files/images/logo_wta_white.png 1x, 
files /images/logo_wta_white@2x.png 2x" 
alt ="logo_wta_white">
<?php
} else {
?>
<img src="files/images/logo_wta.png" 
srcset ="files/images/logo_wta.png 1x, 
files /images/logo_wta@2x.png 2x" alt="logo_wta">
<?php
}
?>