无法使用PHP将数据数组写入文件
我有个问题。我无法使用PHP将数据数组写入文件。我在下面解释我的代码无法使用PHP将数据数组写入文件,php,arrays,file,Php,Arrays,File,我有个问题。我无法使用PHP将数据数组写入文件。我在下面解释我的代码 <?php $result=array(array('cat_id'=>'2','cat_name'=>'spirit','subcat_id'=>'20','subcat_name'=>'pizza'),array('cat_id'=>'3','cat_name'=>'Food','subcat_id'=>'23','subcat_name'=>'pakhal'),arr
<?php
$result=array(array('cat_id'=>'2','cat_name'=>'spirit','subcat_id'=>'20','subcat_name'=>'pizza'),array('cat_id'=>'3','cat_name'=>'Food','subcat_id'=>'23','subcat_name'=>'pakhal'),array('cat_id'=>'2','cat_name'=>'spirit','subcat_id'=>'22','subcat_name'=>'wine'),array('cat_id'=>'2','cat_name'=>'spirit','subcat_id'=>'20','subcat_name'=>'pizza'),array('cat_id'=>'3','cat_name'=>'Food','subcat_id'=>'24','subcat_name'=>'fuddy'),array('cat_id'=>'4','cat_name'=>'Continetal','subcat_id'=>'25','subcat_name'=>'cont'));
$handle = fopen("file.txt", "w");
fwrite($handle, $result);
fclose($handle);
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.basename('file.txt'));
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize('file.txt'));
readfile('file.txt');
exit;
?>
在这里,我还需要下载该文件。在这里我可以下载文件,但是这个
fwrite()希望参数2是中给出的字符串数组,它写在该文件中,没有数据。我需要将所有数据数组写入该文件并下载。请帮助我解决此问题。如果您明确需要将数组放入文件,您可以使用此
fwrite($handle, print_r($result, true));
或者您可以将其转换为json,如下所示
fwrite($handle, json_encode($result));
稍后,当您阅读文件时,您可以使用json解码($your\u file\u content)
撤消操作,因为写入文件没有意义,除非您正在对该文件执行某些您没有向我们显示的操作
<?php
$result=array(array('cat_id'=>'2','cat_name'=>'spirit','subcat_id'=>'20','subcat_name'=>'pizza'),array('cat_id'=>'3','cat_name'=>'Food','subcat_id'=>'23','subcat_name'=>'pakhal'),array('cat_id'=>'2','cat_name'=>'spirit','subcat_id'=>'22','subcat_name'=>'wine'),array('cat_id'=>'2','cat_name'=>'spirit','subcat_id'=>'20','subcat_name'=>'pizza'),array('cat_id'=>'3','cat_name'=>'Food','subcat_id'=>'24','subcat_name'=>'fuddy'),array('cat_id'=>'4','cat_name'=>'Continetal','subcat_id'=>'25','subcat_name'=>'cont'));
header('Content-Type: application/json');
header('Content-Disposition: attachment; filename=file.json');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
$encoded = json_encode($result);
header('Content-Length: ' . strlen($encoded));
echo $encoded;
exit;
?>
首先,您必须处理数组并格式化它,然后按如下方式写入文件:
$result=array(array('cat_id'=>'2','cat_name'=>'spirit','subcat_id'=>'20','subcat_name'=>'pizza'),array('cat_id'=>'3','cat_name'=>'Food','subcat_id'=>'23','subcat_name'=>'pakhal'),array('cat_id'=>'2','cat_name'=>'spirit','subcat_id'=>'22','subcat_name'=>'wine'),array('cat_id'=>'2','cat_name'=>'spirit','subcat_id'=>'20','subcat_name'=>'pizza'),array('cat_id'=>'3','cat_name'=>'Food','subcat_id'=>'24','subcat_name'=>'fuddy'),array('cat_id'=>'4','cat_name'=>'Continetal','subcat_id'=>'25','subcat_name'=>'cont'));
$handle = fopen("file.txt", "w");
$finalData = '';
foreach ($result as $resultData) {
foreach ($resultData as $key => $value) {
$finalData .= ($key. ': '. $value.PHP_EOL);//you can play with this data in any way you want now
}
}
fwrite($handle, $finalData);
fclose($handle);
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.basename('file.txt'));
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize('file.txt'));
readfile('file.txt');
exit;
输出:
因此,将数组转换为字符串,例如使用内爆
可以修改吗?文件的预期内容是什么?我需要得到数组值意味着echo json\u encode($result)
值的输出。
cat_id: 2
cat_name: spirit
subcat_id: 20
subcat_name: pizza
cat_id: 3
cat_name: Food
subcat_id: 23
subcat_name: pakhal
cat_id: 2
cat_name: spirit
subcat_id: 22
subcat_name: wine
cat_id: 2
cat_name: spirit
subcat_id: 20
subcat_name: pizza
cat_id: 3
cat_name: Food
subcat_id: 24
subcat_name: fuddy
cat_id: 4
cat_name: Continetal
subcat_id: 25
subcat_name: cont