php - 使用PHP计算文本文件中的字符出现次数

Question

$count = 0;
$myFile = "file.txt";
$fh = fopen($myFile, 'r');

while(!feof($fh)) 
{
    $Char1 = fgetc($fh);
    if($fh == "a") 
    {
        echo $fh;
        $count++;
    }
}
fclose($fh);

echo "Total 'a' inside File: " . $count;

内容:file.txt

asdasdadaffl;sdgkjsdhfjkghsdfghsdkfvndm,vncmvskjdhfdafhaldfadcnasc adkfjhasdjkalfhadlhhfdskdfhdjkfasf aksdjfhajksdfhjkasdfhakdfasdkcsncandkn

asdkjfhaskdfcnslkjdshfa asdfjkadhfkashdfdknscnaskdjf

我在这里要做的是计算在这个文件中出现了多少个字符“a”。请帮忙。

Answer 1

为什么不直接使用类似的东西

$count = 0;
$myFile = "file.txt";
$fh = fopen($myFile, 'r');
while(!feof($fh)){
    $fr = fread($fh, 8192);
    $count += substr_count($fr, 'a');
}
fclose($fh);
echo 'there are ', $count, " a's";