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uphp:functions:filesize [2017/04/04 13:13]
jeff 		uphp:functions:filesize [2021/09/13 05:57] (current)
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 <badge>WMPRO, WMMINI FW >= 1.0</badge> <badge>WMMEGA FW >= 2.0</badge> <badge>WMPRO, WMMINI FW >= 1.0</badge> <badge>WMMEGA FW >= 2.0</badge>
  
-Return the size of a file, or the number of unread bytes in a stream+Return the size of a file, or the number of unread bytes in a stream or socket
  
 ====Description==== ====Description====
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 **Filename Form** - The syntax is the same as in mainline PHP, and uses a filename for the parameter: **Filename Form** - The syntax is the same as in mainline PHP, and uses a filename for the parameter:
  
-<well size="sm"><html><span style="font-size:125%;color:green">int +<well size="sm"><html> 
-<span style="color:black"></html>[[filesize]] +<span style="font-size:125%;color:green">int 
-<html>(+<span style="color:black">filesize (
 <span style="color:green">string <span style="color:green">string
 <span style="color:blue">$filename <span style="color:blue">$filename
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 </html></well> </html></well>
  
-**Handle Form** - The syntax is unique to uPHP,((The Handle Form is more commonly used on the Wattmon. Compared to mainline PHP, this uPHP form is a much simpler method for retrieving the number of bytes pending in a stream. For examples of how much more complex mainline PHP can be, take a look at the PHP function [[http://php.net/manual/en/function.stream-get-meta-data.php|stream-get-meta-data]] which returns an <html><b><span style="color:green">array<span style="color:black"></b></html> with one of the elements containing 'unread_bytes'.)) and uses an open resource handle for the parameter (which works with streams, sockets, ports and files):+**Handle Form** - The syntax is unique to uPHP,((The Handle Form is more commonly used on the [[hardware:wattmons|Wattmon]]. Compared to mainline PHP, this uPHP form is a much simpler method for retrieving the number of bytes pending in a stream. For examples of how much more complex mainline PHP can be, take a look at the PHP function [[http://php.net/manual/en/function.stream-get-meta-data.php|stream-get-meta-data]] which returns an <html><b><span style="color:green">array<span style="color:black"></b></html> with one of the elements containing 'unread_bytes'.)) and uses an open resource handle for the parameter (which works with streams, sockets, ports and files):
  
-<well size="sm"><html><span style="font-size:125%;color:green">int +<well size="sm"><html> 
-<span style="color:black"></html>[[filesize]] +<span style="font-size:125%;color:green">int 
-<html>(+<span style="color:black">filesize (
 <span style="color:green">int <span style="color:green">int
 <span style="color:blue">$handle <span style="color:blue">$handle
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 <html><b><span style="color:blue">$handle<span style="color:black"></b></html>:  Valid handle of a previously opened resource (Handle Form) <html><b><span style="color:blue">$handle<span style="color:black"></b></html>:  Valid handle of a previously opened resource (Handle Form)
  
-====Return Value====+====Return Values====
  
-Bytes in the file or pending in the stream+<html><b><span style="color:green">Integer<span style="color:black"></b></html> number of bytes in the file, or pending in the stream or socket
  
 ====Examples==== ====Examples====
  
-**Filename Form, output the size of the System Log:**+===Filename Form, output the size of the System Log===
  
 <code php> <code php>
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 </code> </code>
  
-**Handle Form, for a file, output the file size:**+===Handle Form, for a file, output the file size===
  
 <code php> <code php>
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 ?></code> ?></code>
  
-**Handle Form, for a socket** - this example is extracted from the Wattmon OS "/scripts/ip_dongle.cgi":+===Handle Form, for a socket=== 
 + 
 +This example is extracted from the Wattmon OS "/scripts/ip_dongle.cgi":
  
 <code php> <code php>
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 ====See Also==== ====See Also====
- 
-[[feof()]] - Test if no more data is available in a file or stream [possibly useful if you don't need to know the exact number of bytes pending in a stream] 
  
 [[findfirst()]] - Start searching the current folder for files matching a pattern and attributes ['filesize' is one of the array elements returned, see also [[findnext()]]] [[findfirst()]] - Start searching the current folder for files matching a pattern and attributes ['filesize' is one of the array elements returned, see also [[findnext()]]]
  
 [[fopen()]] - Open a file for reading or writing [[fopen()]] - Open a file for reading or writing
- 
-[[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
  
-[[file_exists()]] - Check if a file exists+[[fgets()]] - Return a single line from a file, stream or socket, with optional size limit
  
-[[ini_get()]] - Return the value associated with the key if it exists, or the default value otherwise+[[fwrite()]] - Write data to a file, stream or socket
  
-[[fread()]] - Return bytes from a file or stream+[[feof()]] - Test if no more data is available in a file, stream or socket [possibly useful if you don't need to know the exact number of bytes pending in a stream]
  
 [[fseek()]] - Position the file pointer in an open file [[fseek()]] - Position the file pointer in an open file
  
 [[ftell()]] - Return the current position of a file read/write pointer [[ftell()]] - Return the current position of a file read/write pointer
 +
 +[[fclose()]] - Close a file, stream or socket
 +
 +[[file_exists()]] - Check if a file exists
 +
 +[[ini_get()]] - Get a value from an INI file
 +
  
uphp/functions/filesize.1491311601.txt.gz · Last modified: 2021/09/13 05:56 (external edit)

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