php determines whether a folder exists

PHP determines whether a file or directory exists

1. file_exists() function

Judgement Whether the file exists

Example:

//$file = "check.txt";
if(file_exists($file))
{
    echo "当前目录中，文件".$file."存在";
}
else
{
     echo "当前目录中，文件".$file."不存在";
}

2. is_dir() function

Determine whether the directory exists

Example:

//$dir = "c:/datacheck";
if(is_dir($dir))
{
    echo "当前目录下，目录".$dir."存在";
}
else
{
     echo "当前目录下，目录".$dir."不存在";
}

Recommended tutorial: PHP video tutorial

The above is the detailed content of php determines whether a folder exists. For more information, please follow other related articles on the PHP Chinese website!