(PHP 5 >= 5.1.0, PHP 7)
SplFileObject::fwrite — Write to file
$str
[, int $length
] )
Writes the contents of string
to the file
str
The string to be written to the file.
length
If the length
argument is given, writing will
stop after length
bytes have been written or
the end of string
is reached, whichever comes
first.
Returns the number of bytes written, or NULL
on error.
Example #1 SplFileObject::fwrite() example
<?php
$file = new SplFileObject("fwrite.txt", "w");
$written = $file->fwrite("12345");
echo "Wrote $written bytes to file";
?>
以上例程的输出类似于:
Wrote 5 bytes to file