提问人:user756659 提问时间:3/22/2014 最后编辑:user756659 更新时间:3/23/2014 访问量:281
PHP 和带数组的变量变量
php and variable variables with array
问:
尝试最终得到 7 个数组($mon、$tue、$wed、$thu、$fri、$sat、$sun),这些数组在给定初始数组$hours的一天中每个小时都包含 0 或 1 的值。$hours只是一个已发布的数组,其中包含一周中每天的用户选择小时数。
我相信问题在于我使用了变量($ $day),因为我的工作日数组都返回 null($mon、$tue、$wed、$thu、$fri、$sat、$sun)。如能提供任何协助,将不胜感激。
$hours =
Array
(
[mon] => Array
(
[0] => 12pm
[1] => 1pm
[2] => 2pm
[3] => 3pm
[4] => 4pm
[5] => 5pm
[6] => 6pm
[7] => 7pm
)
[tue] => Array
(
[0] => 12am
[1] => 1am
[2] => 2am
[3] => 3am
[4] => 4am
[5] => 5am
[6] => 6am
[7] => 7am
[8] => 8am
[9] => 9am
[10] => 10am
[11] => 11am
[12] => 12pm
[13] => 1pm
[14] => 2pm
[15] => 3pm
[16] => 4pm
[17] => 5pm
[18] => 6pm
[19] => 7pm
[20] => 8pm
[21] => 10pm
[22] => 11pm
)
[sun] => Array
(
[0] => 12am
)
)
代码:
//create an array of weekdays
$weekdays = array('mon', 'tue', 'wed', 'thu', 'fri', 'sat', 'sun');
foreach($weekdays as $day)
{
//set hours for each day using variable variables $$day = mon, tue, wed, etc
if($hours[$day])
{
$$day['12a'] = in_array("12am", $hours[$day]) == 1 ? 1 : 0;
$$day['1a'] = in_array("1am", $hours[$day]) == 1 ? 1 : 0;
$$day['2a'] = in_array("2am", $hours[$day]) == 1 ? 1 : 0;
$$day['3a'] = in_array("3am", $hours[$day]) == 1 ? 1 : 0;
$$day['4a'] = in_array("4am", $hours[$day]) == 1 ? 1 : 0;
$$day['5a'] = in_array("5am", $hours[$day]) == 1 ? 1 : 0;
$$day['6a'] = in_array("6am", $hours[$day]) == 1 ? 1 : 0;
$$day['7a'] = in_array("7am", $hours[$day]) == 1 ? 1 : 0;
$$day['8a'] = in_array("8am", $hours[$day]) == 1 ? 1 : 0;
$$day['9a'] = in_array("9am", $hours[$day]) == 1 ? 1 : 0;
$$day['10a'] = in_array("10am", $hours[$day]) == 1 ? 1 : 0;
$$day['11a'] = in_array("11am", $hours[$day]) == 1 ? 1 : 0;
$$day['12p'] = in_array("12pm", $hours[$day]) == 1 ? 1 : 0;
$$day['1p'] = in_array("1pm", $hours[$day]) == 1 ? 1 : 0;
$$day['2p'] = in_array("2pm", $hours[$day]) == 1 ? 1 : 0;
$$day['3p'] = in_array("3pm", $hours[$day]) == 1 ? 1 : 0;
$$day['4p'] = in_array("4pm", $hours[$day]) == 1 ? 1 : 0;
$$day['5p'] = in_array("5pm", $hours[$day]) == 1 ? 1 : 0;
$$day['6p'] = in_array("6pm", $hours[$day]) == 1 ? 1 : 0;
$$day['7p'] = in_array("7pm", $hours[$day]) == 1 ? 1 : 0;
$$day['8p'] = in_array("8pm", $hours[$day]) == 1 ? 1 : 0;
$$day['9p'] = in_array("9pm", $hours[$day]) == 1 ? 1 : 0;
$$day['10p'] = in_array("10pm", $hours[$day]) == 1 ? 1 : 0;
$$day['11p'] = in_array("11pm", $hours[$day]) == 1 ? 1 : 0;
}
}
//debugging only to see variable values
file_put_contents('/home/test/public_html/file.txt', print_r($hours, true));
file_put_contents('/home/test/public_html/file-mon.txt', print_r($mon, true));
file_put_contents('/home/test/public_html/file-tue.txt', print_r($tue, true));
file_put_contents('/home/test/public_html/file-wed.txt', print_r($wed, true));
file_put_contents('/home/test/public_html/file-thu.txt', print_r($thu, true));
file_put_contents('/home/test/public_html/file-fri.txt', print_r($fri, true));
file_put_contents('/home/test/public_html/file-sat.txt', print_r($sat, true));
file_put_contents('/home/test/public_html/file-sun.txt', print_r($sun, true));
编辑 - 使用的结束解决方案:
根据需要对脚本的其他方面进行一些更改。
//decode the json array posted
$hours = json_decode($_POST['hours'], true);
//set array of weekdays
$weekdays = array(1 => 'mon', 2 => 'tue', 3 => 'wed', 4 => 'thu', 5 => 'fri', 6 => 'sat', 7 => 'sun');
//set array of hour values
$hourDefs = array('12am', '1am', '2am', '3am', '4am', '5am', '6am', '7am', '8am', '9am', '10am', '11am', '12pm', '1pm', '2pm', '3pm', '4pm', '5pm', '6pm', '7pm', '8pm', '9pm', '10pm', '11pm');
//set result output array
$output = array();
foreach($weekdays as $day=>$day_value)
{
//set hours for each day using variable variables ${$day} = mon, tue, wed, etc
if(isset($hours[$day_value]))
{
foreach($hourDefs as $def)
{
$output[$day_value][$def] = in_array($def, $hours[$day_value]) == 1 ? 1 : 0;
}
}
}
答:
1赞
nice ass
3/23/2014
#1
我会像这样重组该代码:
// keys; you can also use a for() loop to generate them
$hourDefs = array('12am', '1am', '2am' ... );
$output = array();
foreach($weekdays as $day){
if(!isset($hours[$day]))
continue;
// store the output inside an array so you can loop it later
foreach($hourDefs as $def)
$output[$day][$def] = in_array($def, $hours[$day]) == 1 ? 1 : 0;
}
foreach($output as $name => $data){
$pathName = sprintf('/home/test/public_html/file-%s.txt', $name);
file_put_contents($pathName, print_r($data, true));
}
如果要保持键名之间的不一致,请使用 onsubstr($def, 0, -1)
$output
评论
0赞
IMSoP
3/23/2014
这很整洁,但我有几个吹毛求疵的地方:我认为这将消除 OP 想要的数据,但我可能是错的。像这样跳过最里面的通常被认为是糟糕的编码风格,因为通过在下面添加一行而没有意识到它不在循环中来引入错误是非常容易的。continue
{}
foreach
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评论
${$day}[...]
而不是 ,因为 PHP 无法确定您希望变量的名称是 或$$day[..]
$day
$day[..]
$hours
in_array()
返回布尔值,所以你不需要它;这 24 行非常相似的代码应该变成一个循环,最后 7 个调用也应该变成一个循环(如果你有一个关联数组,很容易:你可以只使用 );如果您可以控制数据格式,请使用 24 小时制,而不是所有那些略微不兼容的小时标签。哦,这不是一个好的保存格式,因为它不是为作为数据读回而设计的;try 或 ,或者也许== 1
file_put_contents
foreach
print_r
var_export
serialize
json_encode