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--- uphp:functions:fopen [2017/03/27 16:41]
jeff
+++ uphp:functions:fopen [2021/09/13 05:57]
@@ Line 1: / Line 1: @@
-======fopen======
-<badge>WMPRO, WMMINI FW >= 1.0</badge> <badge>WMMEGA FW >= 2.0</badge>
-Open a file for reading or writing
-====Description====
-<well size="sm"><html><span style="font-size:125%;color:green;">int
-<span style="color:black;"></html>[[fopen]]
-<html>(
-<span style="color:green;">string
-<span style="color:blue;">$filename<span style="color:black;">,
-<span style="color:green;">string
-<span style="color:blue;">$mode
-<span style="color:black;">)
-</html></well>
-Attempt to open a file or stream for reading or writing, and return the file handle for future operations
-====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:
-  * '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'
-<html><span style="color:blue;"><b>mode</b><span style="color:black;"></html>:  The following strings are supported:
-  * 'r' - Open the file (or stream) in read-only mode
-  * '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
-====Return Value====
-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()]]
-If the attempt to open the file or stream fails it will return 0
-====Example====
-<code php>
-<?
-  $f=fopen("/index.cgi","r");
-  if ($f) {
-    print("File opened successfully");
-    fclose($f);
-  } else {
-    print("File open failed");
-  }
-?>
-</code>
-====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
-[[fsockopen()]] - Open an internet socket connection with optional timeout
-[[fclose()]] - Close 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 or stream, with optional size limit
-[[fread()]] - Return bytes from a file or stream
-[[fseek()]] - Position the file pointer in an open file
-[[ftell()]] - Return current file position in an open file
-[[fwrite()]] - Write data to a file or stream
-[[tar_put()]] - Add a file to an open file in TAR format
-[[chdir()]] - Change uPHP's current directory

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