SplFileObject::fwrite
(PHP 5 >= 5.1.0, PHP 7)
SplFileObject::fwrite — Write to file
说明
public SplFileObject::fwrite
( string
$str
[, int $length
] ) : int
Writes the contents of string to the file
参数
-
str -
The string to be written to the file.
-
length -
If the
lengthargument is given, writing will stop afterlengthbytes have been written or the end ofstringis reached, whichever comes first.
返回值
Returns the number of bytes written, or 0 on error.
范例
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