Php处理大文件-分割和合并
分割文件
/*
* 分割文件
* 默认大小 2M=10485760/5
*/
function file_split($file,$block_size=10485760/5)
{
$block_info=array();
$size=filesize($file);
$i=0;
while($size>0){
$block_info[]=array(
'size'=>($size>=$block_size?$block_size:$size),
'file'=>str_replace('.txt', '',$file).'.'.($i++).'.txt'
);
$size-=$block_size;
}
$fp = fopen($file,"rb");
foreach ($block_info as $bi) {
$handle = fopen($bi['file'],"wb");
fwrite($handle,fread($fp,$bi['size']));
fclose($handle);
unset($handle);
}
fclose ($fp);
unset($fp);
}
合并文件
/*
* 合并文件
* 如果合并后的文件为 CPCUxcp111.flv.0.esplit
* 则 file=CPCUxcp111.flv,不包含.x.esplit后缀
* save_file为另存为的文件名
*/
function file_combine($file,$save_file=''){
$filename=basename($file);
$filepath=dirname($file).'/';
$block_info=array();
for($i=0;;$i++){
if(file_exists($file.'.'.$i.'.esplit') && filesize($file.'.'.$i.'.esplit')>0){
$block_info[]=$file.'.'.$i.'.esplit';
}else{
break;
}
}
if($save_file){
$fp = fopen($save_file,"wb");
}else{
$fp = fopen($file,"wb");
}
foreach ($block_info as $block_file) {
$handle = fopen($block_file,"rb");
fwrite($fp,fread($handle,filesize($block_file)));
fclose($handle);
unset($handle);
}
fclose ($fp);
unset($fp);
}
测试代码:
file_split('d:/demo.txt');
- 1
问题算是解决了,不过这方面有时间还应该研究一下