我從數(shù)據(jù)庫中提取許多這樣的行$rows = [ ['id' => 3, 'course_name' => 'GSG2', 'course_day' => 'Monday', 'course_starts_at' => '01:30:00'], ['id' => 2, 'course_name' => 'Look1', 'course_day' => 'Wednesday', 'course_starts_at' => '03:10:00']]我需要從中創(chuàng)建一個(gè)多維數(shù)組，該數(shù)組將工作日作為鍵，將行數(shù)組作為值。因?yàn)榧词巩?dāng)天沒有空，我也需要鑰匙在場，所以我首先這樣做了$timetable = [ ['Monday' => ''], ['Tuesday' => ''], ['Wednesday' => ''], ['Thursday' => ''], ['Friday' => ''],];然后我就這樣做foreach ($rows as $row) { switch ($row['course_day']) { case "Monday": $timetable['Monday'] = $row; break; case "Tuesday": $timetable['Tuesday'] = $row; break; case "Wednesday": $timetable['Wednesday'] = $row; break; case "Thursday": $timetable['Thursday'] = $row; break; case "Friday": $timetable['Friday'] = $row; break; }}但隨后生成的 multidim 數(shù)組每天只有一個(gè)課程（其最后一次迭代）。我嘗試使用 += 而不是 = 但那不起作用。請(qǐng)問您有什么建議嗎？
2 回答
交互式愛情
TA貢獻(xiàn)1712條經(jīng)驗(yàn) 獲得超3個(gè)贊
對(duì)您的最簡單的修改可能如下：
$timetable = [
'Monday' => [],
'Tuesday' => [],
'Wednesday' => [],
'Thursday' => [],
'Friday' => []
];
foreach ($rows as $row) {
$courseDay = $row['course_day'];
if (isset($timetable[$courseDay])) {
$timetable[$courseDay][] = $row;
}
}
首先創(chuàng)建索引作為工作日的時(shí)間表，然后如果工作日匹配則添加事件。它還允許您通過在時(shí)間表變量中添加或刪除它們來限制您支持的日期。
Qyouu
TA貢獻(xiàn)1786條經(jīng)驗(yàn) 獲得超11個(gè)贊
嘗試這樣做
foreach ($rows as $row) {
switch ($row['course_day']) {
case "Monday":
$timetable['Monday'][] = $row;
break;
case "Tuesday":
$timetable['Tuesday'][] = $row;
break;
case "Wednesday":
$timetable['Wednesday'][] = $row;
break;
case "Thursday":
$timetable['Thursday'][] = $row;
break;
case "Friday":
$timetable['Friday'][] = $row;
break;
}
}
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