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PHP code used to determine whether the file exists, whether it is readable, and whether the directory exists

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Release： 2016-07-25 09:04:47

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$file = 'jbxue.com.php';
if (is_readable($file) == false) {
die('The file does not exist or cannot be read');
} else {
echo 'exists';
}
?>

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is_readable() function determines whether the specified file name is readable. Returns TRUE if the specified file or directory exists and is readable

Example 2:

$filename = 'jbxue.com.php';
if (file_exists($filename)) {
echo "The file $filename exists";
} else {
echo "The file $filename does not exist";
}
?>

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file_exists -- Check whether the file or directory exists illustrate bool file_exists (string filename) Returns TRUE if the file or directory specified by filename exists, otherwise returns FALSE.

Example 3:

$file = 'jbxue.com.php';
if (is_file($file) == false) {
die('The file does not exist or cannot be read');
} else {
echo 'exists';
}
?>

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is_file -- Determine whether the given file name is a normal file illustrate bool is_file (string filename) Returns TRUE if the file exists and is a normal file.

Related labels：

php用于判断文件是否存在、是否可读、目录是否存在的代码

source：php.cn

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