这篇文章主要介绍了关于PHP如何读取大excel文件数据的方法,有着一定的参考价值,现在分享给大家,有需要的朋友可以参考一下
今天因为一个老同学找我,说自己公司的物流业务都是现在用excel处理,按月因为数据量大,一个excel差不多有百万数据,文件有接近100M,打开和搜索就相当的慢联想到场景:要导入数据,可能excel数据量很大,这里利用常用的一些方法比如phpexcel会常有时间和内存限制问题
下面我们就利用一个利用流处理的类库SpreadsheetReader来做大excel的读取
关键具体在代码里注释
<?php /** * Created by PhpStorm. * User: qkl * Date: 2018/7/11 * Time: 15:14 */ set_time_limit(0); // 设置脚本最大执行时间 为0 永不过期 //ini_set('memory_limit','200M'); // 临时设置最大内存占用 function convert($size) { $unit = array('b', 'kb', 'mb', 'gb', 'tb', 'pb'); return @round($size / pow(1024, ($i = floor(log($size, 1024)))), 2) . ' ' . $unit[$i]; } require '../vendor/autoload.php'; $start = memory_get_usage(); echo convert($start) . PHP_EOL; //$inputFileName = './11111111.xlsx'; $inputFileName = './example1.xlsx'; // If you need to parse XLS files, include php-excel-reader $startTime = microtime(true); $Reader = new SpreadsheetReader($inputFileName); //获取当前文件所有的工作表 $sheets = $Reader->Sheets(); if (!$sheets) { die("没有工作表"); } //改变当前处理的工作表 $Reader->ChangeSheet(0); //打印当前所在工作表的当前所在行数据 var_dump($Reader->current()); //因为reader类集成了Iter所以可以用迭代方式处理 //这里提醒 如果文件超大,这边的处理速度会过慢,不过不会引发内存性能问题 //$i = 0; //foreach ($Reader as $Row) //{ // if ($i>=3) { // break; // } // // echo $i . PHP_EOL; // print_r($Row); // // $i++; //} $endTime = microtime(true); $memoryUse = memory_get_usage(); echo "内存占用:" . convert($memoryUse) . "; 用时:" . ($endTime - $startTime) . PHP_EOL;
上面读取的example1.xlsx文件有100M左右,读写过慢,测试只开了读取当前默认工作表的当前所在行数据
因数据敏感,已做屏蔽
147.77 kb array (size=50) 0 => string 'xxxxxxxxxxxxxx' (length=25) 1 => string 'xxxxxxxxxxxxxx' (length=15) 2 => string 'xxxxxxxxxxxxxx' (length=18) 3 => string 'xxxxxxxxxxxxxx' (length=12) 4 => string 'xxxxxxxxxxxxxx' (length=12) 5 => string 'xxxxxxxxxxxxxx' (length=12) 6 => string 'xxxxxxxxxxxxxx' (length=24) 7 => string 'xxxxxxxxxxxxxx' (length=12) 8 => string 'xxxxxxxxxxxxxx' (length=27) 9 => string 'xxxxxxxxxxxxxx' (length=12) 10 => string 'xxxxxxxxxxxxxx' (length=15) 11 => string 'xxxxxxxxxxxxxx' (length=28) 12 => string 'xxxxxxxxxxxxxx' (length=9) 13 => string 'xxxxxxxxxxxxxx' (length=12) 14 => string 'xxxxxxxxxxxxxx' (length=9) 15 => string 'xxxxxxxxxxxxxx' (length=6) 16 => string 'xxxxxxxxxxxxxx' (length=9) 17 => string 'xxxxxxxxxxxxxx' (length=3) 18 => string 'xxxxxxxxxxxxxx' (length=6) 19 => string 'xxxxxxxxxxxxxx' (length=3) 20 => string 'xxxxxxxxxxxxxx' (length=15) 21 => string 'xxxxxxxxxxxxxx' (length=15) 22 => string 'xxxxxxxxxxxxxx' (length=19) 23 => string 'xxxxxxxxxxxxxx' (length=13) 24 => string 'xxxxxxxxxxxxxx' (length=19) 25 => string 'xxxxxxxxxxxxxx' (length=12) 26 => string 'xxxxxxxxxxxxxx' (length=12) 27 => string 'xxxxxxxxxxxxxx' (length=12) 28 => string 'xxxxxxxxxxxxxx' (length=6) 29 => string 'xxxxxxxxxxxxxx' (length=12) 30 => string 'xxxxxxxxxxxxxx' (length=6) 31 => string 'xxxxxxxxxxxxxx' (length=15) 32 => string 'xxxxxxxxxxxxxx' (length=24) 33 => string 'xxxxxxxxxxxxxx' (length=18) 34 => string 'xxxxxxxxxxxxxx' (length=18) 35 => string 'xxxxxxxxxxxxxx' (length=24) 36 => string 'xxxxxxxxxxxxxx' (length=12) 37 => string 'xxxxxxxxxxxxxx' (length=18) 38 => string 'xxxxxxxxxxxxxx' (length=21) 39 => string 'xxxxxxxxxxxxxx' (length=9) 40 => string 'xxxxxxxxxxxxxx' (length=9) 41 => string 'xxxxxxxxxxxxxx' (length=18) 42 => string 'xxxxxxxxxxxxxx' (length=21) 43 => string 'xxxxxxxxxxxxxx' (length=15) 44 => string 'xxxxxxxxxxxxxx' (length=12) 45 => string 'xxxxxxxxxxxxxx' (length=6) 46 => string 'xxxxxxxxxxxxxx' (length=12) 47 => string 'xxxxxxxxxxxxxx' (length=22) 48 => string 'xxxxxxxxxxxxxx' (length=22) 49 => string '' (length=0) 内存占用:207.55 kb; 用时:9.5835480690002
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