dio_open

Opens a new filename with specified permissions of flags and creation permissions of mode (PHP 4 >= 4.2.0, PHP 5 <= 5.0.5)
resource dio_open ( string filename, int flags [, int mode] )

Example 500. Opening a file descriptor

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<?php


$fd = dio_open('/dev/ttyS0', O_RDWR | O_NOCTTY | O_NONBLOCK);

dio_close($fd);
?>

Code Examples / Notes » dio_open

alla

To specify a combination of flags you OR them together. This was the only way I could get it to append: $fd = dio_open($file, O_WRONLY | O_APPEND);

Please note that dio_open()/dio_write()/dio_close() is *faster* than fopen()/fwrite()/fclose() for files. fwrite() has to manage a 8k buffer, while dio_write() just issue a single write(). The end result is less system calls and less memory access. Also, giving the full size to write() as with dio_write() let filesystems properly use preallocation in order to avoid fragmentation.

Change Language

dio_close
dio_fcntl
dio_open
dio_read
dio_seek
dio_stat
dio_tcsetattr
dio_truncate
dio_write

dio_open

Opens a new filename with specified permissions of flags and creation permissions of mode (PHP 4 >= 4.2.0, PHP 5 <= 5.0.5) resource dio_open ( string filename, int flags [, int mode] )

Example 500. Opening a file descriptor

Code Examples / Notes » dio_open

Change Language

Opens a new filename with specified permissions of flags and creation permissions of mode (PHP 4 >= 4.2.0, PHP 5 <= 5.0.5)
resource dio_open ( string filename, int flags [, int mode] )