Question

In C the last character of a string is always ‘\0’ Is it same for PHP as well? If not, then what’s the last character of a string in PHP?

Answer 1

for( $i = 0, $len = strlen( $string ); $i < $len; $i++ )
{
    $char = $string[ $i ];
    // do something with $char
}

… is one way to do it.

Another way, is simply using PHP function str_split() (which creates an array of the individual characters of the string (unless you pass it the second argument $split_length of a different length than the default)):

foreach( str_split( $string ) as $char )
{
    // do something with $char
}

… etc.

Edit:

As an addendum to your comments to your question; use fgetcsv() for parsing csv files.