我该如何解决这个问题? [英] How do I solve the problem?

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问题描述

我需要知道第18行的问题。问题是什么?



我尝试过的事情:



  $ columnsNotEmpty  = []; 
$ count = 0 ;
foreach ($ data as $ key => $ row){
if ($ count == 0 & ;& $ isTopHeaderFrozen){
$ count ++;
继续;
}

foreach ($ row as $ key2 => $ col){
if (!empty($ col)&& ;! in_array($ key2,$ columnsNotEmpty)){
array_push($ columnsNotEmpty,$ key2);
}
}

$ count ++;
}

foreach ($ data as $ key => $ row){
foreach ($ row as $ key2 => $ col){
if (! in_array($ key2,$ columnsNotEmpty)){
unset($ data [$ key] [$ key2]);
}
}
}

解决方案

columnsNotEmpty = [];


count = 0 ;
foreach


data as

I need to know the problem in line number 18. what is the problem?

What I have tried:

$columnsNotEmpty = [];
    $count = 0;
    foreach ($data as $key => $row) {
        if ($count == 0 && $isTopHeaderFrozen) {
            $count++;
            continue;
        }

        foreach ($row as $key2 => $col) {
            if (!empty($col) && !in_array($key2, $columnsNotEmpty)) {
                array_push($columnsNotEmpty, $key2);
            }
        }

        $count++;
    }

    foreach ($data as $key => $row) {
        foreach ($row as $key2 => $col) {
            if (!in_array($key2, $columnsNotEmpty)) {
                unset($data[$key][$key2]);
            }
        }   
    }

解决方案

columnsNotEmpty = [];


count = 0; foreach (


data as


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