SplFileObject::fwrite
(PHP 5 >= 5.1.0, PHP 7, PHP 8)
SplFileObject::fwrite — Write to file
说明
Writes the contents of data to the file
参数
data-
The string to be written to the file.
length-
If the
lengthargument is given, writing will stop afterlengthbytes have been written or the end ofdatais reached, whichever comes first.
返回值
Returns the number of bytes written, or false on error.
更新日志
| 版本 | 说明 |
|---|---|
| 7.4.0 |
The function now returns false instead of zero on failure.
|
示例
示例 #1 SplFileObject::fwrite() example
<?php
$file = new SplFileObject("fwrite.txt", "w");
$written = $file->fwrite("12345");
echo "Wrote $written bytes to file";
?>以上示例的输出类似于：
Wrote 5 bytes to file