PHP utf-8由char读取文件

Question

I have some serious problem dealing with files in php with utf-8 encoding. I need to read a file char by char or possibly line by line, with fixed small chunks. I tried to use fgetc and fgets but characters encoded in utf8 are split in a few "chars" instead of only one. I'm trying to find a solution, it could be even a small "string" containing only the character in Unicode but it must be read from file properly.

Pseudo code I would like to use:

while ( ($c == read_utf8_char($file)) != false ) {
    if ($c == 'ó') do_something();
}

I would appreciate your help.

Answer 1

function mb_str_split($string) { 
    return preg_split('/(?<!^)(?!$)/u', $string ); 
} 

$chars = mb_str_split($file);

foreach ($chars as $c) {
    if ($c == 'ó') do_something();
}

~ Source: http://www.php.net/manual/en/function.mb-split.php#99851