contants有啥不一樣啊求大神簡單點？

fwrite寫入字符串

<?php

$file = fopen("test.txt","w");

echo fwrite($file,"Hello World. Testing!");

fclose($file);

?>

上面的代碼將輸出：

file_put_contants寫入字符串

<?php

file_put_contants("test.txt","Hello World. Testing!");

?>

一句話,file_put_contants() 封裝了封裝了文件打開,關閉的過程.