如何在while循环中使用json_encode?

问题描述 投票:0回答:1

我的循环有点问题。我要做一个while循环因为我编码非常大的文件。但是如果我每行编码一行,我每次都会创建一个新的JSON对象。

所以现在我有了这个输出。

[
    [
        "some logs and soo with informations ",
        "00:59:59",
        "the pure logssdf"
    ]
][
    [
        "some logs and soo with informations ",
        "00:59:52",
        "the pure logssdf"
    ]
]

但是我需要这样的东西:

[
            {
               "some logs and soo with informations ",
               "00:59:52",
               "the pure logssdf"
            },{
               "some logs and soo with informations ",
               "00:59:52",
               "the pure logssdf"
            }
]

使用此代码,我创建了这个JSON文件:

$jsonFile = fopen('JSONLogs/' . $generatedName, "w");

$handle = @fopen($PATHTOLOG, "r");
if ($handle) {
    while (($buffer = fgets($handle, 4096)) !== false) {
        $pattern = '/^\w+\s+\d+\s('. preg_quote($SelectedTime) .':\d+.\d+).\d+.\d+\s(.+)/im';
        if (preg_match_all($pattern, $buffer, $matches, PREG_SET_ORDER)) {
            fwrite($jsonFile, json_encode($matches, JSON_PRETTY_PRINT));
        }
        else {

        }
    }

//var_dump($decodeData);
}
fclose($handle);
fclose($jsonFile);
php json while-loop
1个回答
0
投票

所以我决定制作自己的“编码器”,并将其写入文件中。这是最终的代码,对我有用。

$jsonFile = fopen('JSONLogs/' . $generatedName, "w");
$i=0;

$handle = @fopen($PathToTMP, "r");
if ($handle) {
    fwrite($jsonFile, "[");
    while (($buffer = fgets($handle, 4096)) !== false) {
        $pattern = '/^\w+\s+\d+\s('. preg_quote($SelectedTime) .':\d+.\d+).\d+.\d+\s(.+)/im';
        if (preg_match_all($pattern, $buffer, $matches, PREG_SET_ORDER)) {

            if ($i == 0) // Run this if block once.
            {
                fwrite($jsonFile, '{"0" : "'. $matches[0][0] .'" , '. "\n" . '  "1" : "'. $matches[0][1] .'", '. "\n" . ' "2" : "'. $matches[0][2] .'"}'. "\n" . '');
            }
            else
            {
                fwrite($jsonFile, ',{"0" : "'. $matches[0][0] .'" , '. "\n" . '  "1" : "'. $matches[0][1] .'", '. "\n" . ' "2" : "'. $matches[0][2] .'"}'. "\n" . ''); 
            }
            $i++;

        }
    }
    fwrite($jsonFile, "]");


//var_dump($decodeData);
}
fclose($handle);
fclose($jsonFile);
© www.soinside.com 2019 - 2024. All rights reserved.