PHP中创建空文件的代码[file_put_contents vs touch]

I has passed a small test to check which function is faster to create a new file.

file_put_contents vs touch

<?php 
for($i = ; $i < 100; $i++) 
{ 
file_put_contents('dir/file'.$i, ''); 
} 
?>

Average time: 0,1145s

<?php 
for($i = ; $i < 100; $i++) 
{ 
touch('dir/file'.$i); 
} 
?>

Average time: 0,2322s

所以，file_put_contents比touch快，大约两倍。