将项目添加到关联数组 [英] Adding an item to an associative array
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问题描述
//go through each question
foreach($file_data as $value) {
//separate the string by pipes and place in variables
list($category, $question) = explode('|', $value);
//place in assoc array
$data = array($category => $question);
print_r($data);
}
这不起作用,因为它替换了数据的值.我如何让它在每个循环中添加一个关联值? $file_data
是具有动态大小的数据数组.
This is not working as it replaces the value of data. How can I have it add an associative value each loop though? $file_data
is an array of data that has a dynamic size.
推荐答案
我认为您想要$data[$category] = $question;
或者如果您想要一个将类别映射到问题数组的数组:
Or in case you want an array that maps categories to array of questions:
$data = array();
foreach($file_data as $value) {
list($category, $question) = explode('|', $value, 2);
if(!isset($data[$category])) {
$data[$category] = array();
}
$data[$category][] = $question;
}
print_r($data);
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