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"; }
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