Common file operations in php notes_PHP tutorial

Copy code The code is as follows:

//Common file operation functions

// The first part is file reading, writing, creation, deletion, renaming, etc.
//Before operating the file, let’s first determine whether it is a file and whether it is executable, readable and writable
$file="test.txt";
if(file_exists($file))//Whether the disk file exists
{
echo "The file exists
";
}else
{
echo "The file does not Exists, created";
$fp=fopen($file,"w");//Read-only mode creation
fclose($fp);
}
if(is_file($file ))
{
echo "is a file
";
}
if(is_dir($file))
{
echo "is a directory
" ;
}

if(is_executable($file))
{
echo "File executable
";
}
if(is_readable($file ))
{
echo "The file is readable
";
}
if(is_writable($file))
{
echo "The file is writable}
chmod($file,0777);//Full permissions
//Mode Description The number 1 means to make the file executable, the number 2 means to make the file writable, and the number 4 means to make the file Readable - the addition of modes represents permissions
$fp=fopen("test.txt","a+");//Open with append read and write methods
//When opening a remote file
/ /$fp=fopen("test.txt","a+b"); Remember to add b;
$content=fread($fp,70);//Read 70 bytes
echo "1 .{$content}
";//Output
fwrite($fp,"I amRecommendation$content=file_get_contents("test.txt");//Reading files It is recommended to use this function to read remote files
//$content=file_get_contents( "http://www.jianlila.com");
echo "2.{$content}
";
file_put_contents("test.txt","I amLove My Parentsasddddddddddddddddddddddddddddxxxxxxxxx");
//Output to file
fclose($fp);//Close the file handle
$fp=fopen("test.txt","a+");
$content=fread($fp,filesize("test.txt"));
//Read all content filesize($file )//Number of file bytes
echo "3.{$content}
";
$fp=fopen("test.txt","r");
echo "One character ".fgetc($fp)."
";//Read one character
$fp=fopen("test.txt","r");
echo "One line".fgets( $fp)."
";//Read a line of characters
$fp=fopen("test.txt","r");
echo "remaining data";
fpassthru( $fp);
echo "
";//The remaining data can be used to output binary files
copy("test.txt","Jianlila.txt");
/ /File copy
if(file_exists("Love My Parents.txt"))
{
unlink("Love My Parents.txt");
//Delete the file if it exists
}
rename("Recommendation gift.txt","Love my parents.txt");
//File rename

if(file_exists("Recommendation gift") )
{
rmdir("Recommended gift");//Delete folder
}else
{
mkdir("Recommended gift");//Create folder
}


//Get file information function
$file="test.txt";
echo "File size".filesize($file)."bytesecho "File type".filetype($file)."
";
//The file type here is not the .txt we see, which refers to fifo, char, dir, block, link, file and unknown
$fp=fopen($file,"r");//Open the file
print_r(fstat($fp));//Print file information
echo "Current file path information".__FILE__."
";
echo "The directory where the current file is located".dirname(__FILE__)."
";
echo "Current file name". basename(__FILE__)."
";
print_r(stat($file));//Print file information

?>

http://www.bkjia.com/PHPjc/322562.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/322562.htmlTechArticleCopy the code code as follows: ?php //Commonly used file operation functions//The first part of file reading, writing, creation and deletion Naming, etc.//Before we start operating the file, let’s first determine whether it is a file...