SplFileObject::valid()

(PHP 5 >= 5.1.0, PHP 7)

Not at EOF

说明

publicSplFileObject::valid(void): bool

Check whether EOF has been reached.

参数

此函数没有参数。

返回值

Returns TRUE if not reached EOF,FALSE otherwise.

范例

SplFileObject::valid() example

<?php
// Loop over a file, line by line
$file = new SplFileObject("file.txt");
while ($file->valid()) {
    echo $file->fgets();
}
?>

参见

• SplFileObject::current() Retrieve current line of file
• SplFileObject::key() Get line number
• SplFileObject::seek() Seek to specified line
• SplFileObject::next() Read next line
• SplFileObject::rewind() Rewind the file to the first line