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uphp:functions:fopen

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uphp:functions:fopen [2017/03/31 15:57]
jeff 		uphp:functions:fopen [2021/09/13 05:57] (current)
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 ====Description==== ====Description====
  
-<well size="sm"><html><span style="font-size:125%;color:green">int +<well size="sm"><html> 
-<span style="color:black"></html>[[fopen]] +<span style="font-size:125%;color:green">int 
-<html>(+<span style="color:black">fopen (
 <span style="color:green">string <span style="color:green">string
 <span style="color:blue">$filename<span style="color:black">,  <span style="color:blue">$filename<span style="color:black">, 
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 </html></well> </html></well>
  
-Attempt to open a file or stream for reading or writing, and return the file handle for future operations+Attempt to open a file (or special stream) for reading or writing, and return the file handle for future operations
  
 ====Parameters==== ====Parameters====
  
-<html><span style="color:blue"><b>$filename</b><span style="color:black"></html>:   If a path is omitted, the current directory will be used to search for the file. Relative paths are supported. Two special file names will open specific streams instead:+<html><b><span style="color:blue">$filename<span style="color:black"></b></html>:   If a path is omitted, the current directory will be used to search for the file. Relative paths are supported. Two special file names will open specific streams instead: 
   * 'php:%%//%%stdin' - This will open a stream that will accept characters from a telnet console, allowing for interactive applications responding to keystrokes, when using mode 'r'   * 'php:%%//%%stdin' - This will open a stream that will accept characters from a telnet console, allowing for interactive applications responding to keystrokes, when using mode 'r'
   * 'php:%%//%%stdout' - This will send output characters to the standard output device, such as a telnet console, when using mode 'w'   * 'php:%%//%%stdout' - This will send output characters to the standard output device, such as a telnet console, when using mode 'w'
  
-<html><span style="color:blue"><b>$mode</b><span style="color:black"></html>:  The following strings are supported:+<html><b><span style="color:blue">$mode<span style="color:black"></b></html>:  The following strings are supported: 
   * 'r' - Open the file (or stream) in read-only mode   * 'r' - Open the file (or stream) in read-only mode
   * 'w' - Open the file (or stream) in write mode, which will overwrite the file   * 'w' - Open the file (or stream) in write mode, which will overwrite the file
   * 'a' - Open the file in append mode for writing, which will open the file and move the pointer to the end of the file   * 'a' - Open the file in append mode for writing, which will open the file and move the pointer to the end of the file
  
-====Return Value====+====Return Values====
  
-Upon success it returns a file handle which may be used together with the other file functions that require a handle such as [[fgets()]], [[fwrite()]], [[fclose()]] and [[feof()]]+<html><b><span style="color:green">Integer<span style="color:black"></b></html>:  File handle, or 0 if the attempt to open the file or stream fails
  
-If the attempt to open the file or stream fails it will return 0+The file handle may be used together with the other file functions that require a handle such as [[fgets()]], [[fwrite()]], [[fclose()]] and [[feof()]]
  
 ====Example==== ====Example====
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 ====See Also==== ====See Also====
- 
-[[f485open()]] - Open the RS-485 port at the specified baud rate and parity 
  
 [[fseropen()]] - Open the serial port at the specified baud rate with optional parameters [[fseropen()]] - Open the serial port at the specified baud rate with optional parameters
 +
 +[[f485open()]] - Open the RS-485 port at the specified baud rate and parity
  
 [[fsockopen()]] - Open an internet socket connection with optional timeout [[fsockopen()]] - Open an internet socket connection with optional timeout
  
-[[fclose()]] - Close a file, stream or socket+[[fread()]] - Read bytes from a file, stream or socket
  
-[[feof()]] - Test if no more data is available in a file or stream+[[fgets()]] - Return a single line from a file, stream or socket, with optional size limit
  
-[[fgets()]] - Return a single line from a file or stream, with optional size limit+[[fwrite()]] - Write data to a file, stream or socket
  
-[[fread()]] - Return bytes from a file or stream+[[tar_put()]] - Add a file to an open file in TAR format 
 + 
 +[[feof()]] - Test if no more data is available in a file, stream or socket 
 + 
 +[[filesize()]] - Return the size of a file, or the number of unread bytes in a stream or socket
  
 [[fseek()]] - Position the file pointer in an open file [[fseek()]] - Position the file pointer in an open file
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 [[ftell()]] - Return the current position of a file read/write pointer [[ftell()]] - Return the current position of a file read/write pointer
  
-[[fwrite()]] - Write data to a file or stream +[[fclose()]] - Close a file, stream or socket
- +
-[[tar_put()]] - Add a file to an open file in TAR format +
- +
-[[chdir()]] - Change uPHP's current directory+
  
uphp/functions/fopen.1490975860.txt.gz · Last modified: 2021/09/13 05:56 (external edit)

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