PHP feof() 函数
PHP 教程
· 2019-01-24 19:44:34
定义和用法
feof() 函数检查是否已到达文件末尾(EOF)。
如果出错或者文件指针到了文件末尾(EOF)则返回 TRUE,否则返回 FALSE。
语法
feof(file)
| 参数 | 描述 |
|---|---|
| file | 必需。规定要检查的打开文件。 |
提示和注释
提示:feof() 函数对遍历长度未知的数据很有用。
实例
<?php
$file = fopen("test.txt", "r");
//Output a line of the file until the end is reached
while(! feof($file))
{
echo fgets($file). "<br />";
}
fclose($file);
?>
上面的代码将输出:
Hello, this is a test file. There are three lines here. This is the last line.
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