注意：未定义偏移：3,4,5,6,7,8-

Question

811.<div style="position:absolute; left:15.5%; top:108%;"> <img src="../../fb_users/<?php echo $gender; ?>/<?php echo $user; ?>/Profile/<?php echo $img_array[0] ?>" height="90" width="78"> </div> 
812.<div style="position:absolute; left:22%; top:108%;"> <img src="../../fb_users/<?php echo $gender; ?>/<?php echo $user; ?>/Post/<?php echo $img_array[1] ?>" height="90" width="78"> </div> 
813.<div style="position:absolute; left:28.5%; top:108%;"> <img src="../../fb_users/<?php echo $gender; ?>/<?php echo $user; ?>/Post/<?php echo $img_array[2] ?>" height="90" width="78"> </div> 
814.<div style="position:absolute; left:15.5%; top:125%;"> <img src="../../fb_users/<?php echo $gender; ?>/<?php echo $user; ?>/Post/<?php echo $img_array[3] ?>" height="90" width="78"> </div> 
815.<div style="position:absolute; left:22%; top:125%;"> <img src="../../fb_users/<?php echo $gender; ?>/<?php echo $user; ?>/Post/<?php echo $img_array[4] ?>" height="90" width="78"> </div> 
816.<div style="position:absolute; left:28.5%; top:125%;"> <img src="../../fb_users/<?php echo $gender; ?>/<?php echo $user; ?>/Post/<?php echo $img_array[5] ?>" height="90" width="78"> </div> 
817.<div style="position:absolute; left:15.5%; top:142%;"> <img src="../../fb_users/<?php echo $gender; ?>/<?php echo $user; ?>/Post/<?php echo $img_array[6] ?>" height="90" width="78"> </div> 
818.<div style="position:absolute; left:22%; top:142%;"> <img src="../../fb_users/<?php echo $gender; ?>/<?php echo $user; ?>/Post/<?php echo $img_array[7] ?>" height="90" width="78"> </div> 
819.<div style="position:absolute; left:28.5%; top:142%;"> <img src="../../fb_users/<?php echo $gender; ?>/<?php echo $user; ?>/Post/<?php echo $img_array[8] ?>" height="90" width="78"> </div> 

ERRORS：
通知（！）：用C 3：：未定义偏移\ wamp64 \ WWW \ peppal \ fb_files \ fb_profile \ Profile.php上线814调用堆栈#TimeMemoryFunctionLocation 10.0017384336 {主}（）... \ Profile.php：0 “HEIGHT =” 90" 宽度= “78”>

通知（！）：未定义的偏移量：4行C：\ wamp64 \ www \ peppal \ fb_files \ fb_profile \ Profile.php在815行调用堆栈#TimeMemoryFunctionLocation 10.0017384336 {main}（）... \ Profile.php：0“height =”90“width =“78”>

（！ ）注意：在816行的C：\ wamp64 \ www \ peppal \ fb_files \ fb_profile \ Profile.php中未定义偏移量：5调用堆栈#TimeMemoryFunctionLocation 10.0017384336 {main}（）... \ Profile.php：0“height =” （！）90" 宽度= “78”>

注意：未定义偏移：6在C：\ wamp64 \ WWW \ peppal \ fb_files \ fb_profile \ Profile.php上线817调用堆栈#TimeMemoryFunctionLocation 10.0017384336 {主}（）... \ Profile.php：0 “HEIGHT =” 90" 宽度= “78”>

通知（！）：用C 7：：未定义偏移\ wamp64 \ WWW \ peppal \ fb_files ＃818行上的\ fb_profile \ Profile.php调用堆栈#TimeMemoryFunctionLocation 10.0017384336 {main}（）... \ Profile.php：0“height =”90“width =”78“>

（！ ）注意：在819行的C：\ wamp64 \ www \ peppal \ fb_files \ fb_profile \ Profile.php中未定义偏移量：8调用堆栈#TimeMemoryFunctionLocation 10.0017384336 {main}（）... \ Profile.php：0“height =” 90" 宽度=‘78’>

Answer 1

使用isset()检查一个变量现有的或没有，则代码应该像，

print isset($img_array[3]) && '<div style="position:absolute; left:15.5%; top:125%;"> 
     <img src="../../fb_users/'.$gender.'/'.$user.'/Post/'.$img_array[3].'" 
     height="90" width="78"></div>'; 

其它数组索引使用相同的代码。