PHP implementation of large file cutting and merging steps

This time for everyone to bring PHP to achieve large file cutting and merging steps, PHP implementation of large file cutting and merger considerations, the following is the actual case, together to see.

Split code

split.php

<?php$i  = 0;                 Split block number $fp  = fopen ("Hadoop.sql", "RB");      The file to be split $file = fopen ("Split_hash.txt", "a");    The text file that records the split information, the actual production environment exists redis more suitable while (!feof ($fp)) {    $handle = fopen ("hadoop.{ $i}.sql "," WB ");    Fwrite ($handle, Fread ($fp, 5242880));//Cut the block size 5m    fwrite ($file, "hadoop.{ $i}.sql\r\n ");    Fclose ($handle);    Unset ($handle);    $i + +;} Fclose ($FP); fclose ($file); echo "OK";

Merge code

merge.php

<?php$hash = file_get_contents ("Split_hash.txt"); Read the information of the segmented file $list = explode ("\ r \ n", $hash); $fp = fopen ("Hadoop2.sql", "AB");    The merged file name, foreach ($list as $value) {  if (!empty ($value)) {    $handle = fopen ($value, "RB");    Fwrite ($fp, Fread ($handle, FileSize ($value)));    Fclose ($handle);    Unset ($handle);  }} Fclose ($FP); echo "OK";

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