(PHP 5 >= 5.1.0, PHP 7)
SplFileObject::fgetc — Gets character from file
public SplFileObject::fgetc ( ) : string
Gets a character from the file.
This function has no parameters.
Returns a string containing a single character read from the file or false on EOF.
This function may return Boolean false, but may also return a non-Boolean value which evaluates to false. Please read the section on Booleans for more information. Use the === operator for testing the return value of this function.
Example #1 SplFileObject::fgetc() example
<?php
$file = new SplFileObject('file.txt');
while (false !== ($char = $file->fgetc())) {
echo "$char\n";
}
?>
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https://www.php.net/manual/en/splfileobject.fgetc.php