使用 fputcsv 的 advantages/disadvantages 是什么?

What is the advantages/disadvantages of using fputcsv?

以下代码来自 fputcsv 的文档:

<?php
$time_start = microtime(true);
$list = array (
    array('aaa', 'bbb', 'ccc', 'dddd'),
    array('123', '456', '789'),
    array('"aaa"', '"bbb"')
);

$fp = fopen('file.csv', 'w');

foreach ($list as $fields) {
    fputcsv($fp, $fields);
}

fclose($fp);

$time_end = microtime(true);
$time = $time_end - $time_start;
echo "time is: $time";
?> 

time is: 0.0037028789520264
time is: 0.0036959648132324
time is: 0.0037329196929932

为什么不使用类似下面的代码呢?他们似乎有相同的速度?通过这种方式,您可以控制需要使用哪种换行符,例如 \n\r\n

<?php
$time_start = microtime(true);
$list = array (
    array('aaa', 'bbb', 'ccc', 'dddd'),
    array('123', '456', '789'),
    array('"aaa"', '"bbb"')
);

$fp = fopen('file.csv', 'w');

foreach ($list as $fields) {
    fwrite($fp, implode(',', $fields) . "\n");
}

fclose($fp);

$time_end = microtime(true);
$time = $time_end - $time_start;
echo "time is: $time";
?> 

time is: 0.0037031173706055
time is: 0.0037119388580322
time is: 0.0036849975585938

DISCLAIMER: I dont know if im using too small number of fields to benchmark

fputcsv 是一个辅助函数。是的,你可以手动完成。在引擎盖下可能会有一些 simmelair 功能。但是这样实现起来更容易,提高了可读性。直接丢数组就可以了,不用担心转义等问题