php06x - 経済統計練習帳

<?php
 
$memo="";
 
$fp = fopen("data.txt", "r");
while ($line = fgets($fp)) {
$memo=$memo.$line;
}
fclose($fp);
 
$px=explode(",",$memo);
 
$px[0]=$px[0]+1;
$px[1]=$px[1]+1;
 
$memo=$px[0].",".$px[1].",".$px[2].",".$px[3];
 
$fp2 = fopen("data.txt", "w");
fwrite($fp2,$memo);
fclose($fp2);
 
print($memo);
 
?>