Question

我需要写一些ID＃，来自＆＃34; cccr_mems，json＆＃34;到文件＆＃34; USCF_ID.txt＆＃34;在PHP中。我真的很想知道如何做到这一点。它将为数据交换和操纵开辟更多可能性。

cccr_mems.json php数组（~300条记录）

[
{
"Name": "Adeyemon, Murie",
"Rating": 1000,
"CCCR_Exp": "1000.10.10",
"Class": "E",
"ID": 16720664
},
{
"Name": "Ahmed, Jamshed",
"Rating": 1735,
"CCCR_Exp": "2018.10.18",
"Class": "B",
"ID": 12537964
}]



<?php //write IDs to file 
$lines = file('cccr_mems.json') or exit("Unable to open file!");

$myfile = fopen("USCF_ID.txt", "w") or die("Unable to open file!");

foreach($lines as $x => $x_value) {

fwrite($lines.ID); //supposed to output $lines[ID]

fwrite "\n";

}

fclose($myfile);  

?>

Answer 1

您可以尝试使用file_get_contents()加json_decode()＆amp; file_put_contents()

<?php
$json  = file_get_contents('cccr_mems.json'); // Reads entire file to string
$array = json_decode($json, true);            // Converts json to array

$id = [];
foreach($array as $value) {
    $id[] = $value['ID'];   // Get all ID
}

file_put_contents('USCF_ID.txt', explode(PHP_EOL, $id));  // Write string to file

将特定于php数组的字段写入磁盘

1 个答案: