我用 Laravel 實(shí)現(xiàn)了一個(gè)代碼來(lái)處理塊上傳，如下所示。// if total size equals length of file we have gathered all patch filesif ($size == $length) { // write patches to file foreach ($patch as $filename) { // get offset from filename list($dir, $offset) = explode('.patch.', $filename, 2); // read patch and close $patch_contents = Storage::disk('tmp')->get($filename); // apply patch Storage::disk('tmp')->append($dir . $name, $patch_contents, ""); } // remove patches foreach ($patch as $filename) { Storage::disk('tmp')->delete($filename); }}問(wèn)題是大文件會(huì)出現(xiàn)以下錯(cuò)誤。"Allowed memory size of 134217728 bytes exhausted (tried to allocate 160000008 bytes)"我知道錯(cuò)誤與 append 方法有關(guān)。我根據(jù)此鏈接中的解決方案解決了問(wèn)題，如下所示。// if total size equals length of file we have gathered all patch filesif ($size == $length) { $time_limit = ini_get('max_execution_time'); $memory_limit = ini_get('memory_limit'); set_time_limit(0); ini_set('memory_limit', '-1'); // write patches to file foreach ($patch as $filename) { // get offset from filename list($dir, $offset) = explode('.patch.', $filename, 2); // read patch and close $patch_contents = Storage::disk('tmp')->get($filename); // apply patch Storage::disk('tmp')->append($dir . $name, $patch_contents, ""); } // remove patches foreach ($patch as $filename) { Storage::disk('tmp')->delete($filename); } set_time_limit($time_limit); ini_set('memory_limit', $memory_limit);}但是我對(duì)這個(gè)解決方案沒(méi)有很好的感覺(jué)！我的問(wèn)題是，首先，為什么append方法會(huì)出現(xiàn)這樣的錯(cuò)誤呢？解決方案是否合適？另一方面，Laravel 對(duì)這個(gè)問(wèn)題的解決方案是什么？
1 回答
墨色風(fēng)雨
TA貢獻(xiàn)1853條經(jīng)驗(yàn) 獲得超6個(gè)贊
根本原因似乎在append的來(lái)源。
$this->put($path,?$this->get($path).$separator.$data);
這將獲取文件內(nèi)容，然后連接數(shù)據(jù)并將文件放回原處。不知道為什么這樣做，但我猜這是因?yàn)樗写鎯?chǔ)類(lèi)型都不支持以追加模式打開(kāi)文件，并且必須Storage實(shí)現(xiàn)CloudFilesystemContract這意味著它適用于云存儲(chǔ)（你通常不能“追加” " 到一個(gè)文件）。
深入挖掘可以發(fā)現(xiàn) Laravel 的“驅(qū)動(dòng)程序”由FlysystemStorage支持，并且其接口中不包含功能，因此 Laravel 只能使用提供的接口方法來(lái)實(shí)現(xiàn)一個(gè)功能。append
您始終可以推出自己的解決方案：
// if total size equals length of file we have gathered all patch files
if ($size == $length) {
? ? // write patches to file
? ? foreach ($patch as $filename) {
? ? ? ? // get offset from filename
? ? ? ? list($dir, $offset) = explode('.patch.', $filename, 2);
? ? ? ? // read patch and close
? ? ? ? $patch_contents = Storage::disk('tmp')->get($filename);
? ? ? ? // apply patch
? ? ? ? $fhandle = fopen($dir.$name, "a"); // You may need to adjust the filename?
? ? ? ? fwrite($fhandle, $patch_contents);
? ? ? ? fclose($fhandle);
? ? }
? ? // remove patches
? ? foreach ($patch as $filename) {
? ? ? ? Storage::disk('tmp')->delete($filename);
? ? }
}
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