SplFileObject::ftruncateSplFileObject::fwrite
(PHP 5 >= 5.1.0)
SplFileObject::fwrite — Write to file
说明
public int SplFileObject::fwrite
( string
$str
[, int $length
] )
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 NULL 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
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