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--TEST--
Test fseek(), ftell() & rewind() functions : usage variations - all w & x modes, SEEK_CUR
--SKIPIF--
<?php
if( substr(PHP_OS, 0, 3) == "WIN" )
die("skip.. Not valid for Windows");
?>
--FILE--
<?php
/* Prototype: int fseek ( resource $handle, int $offset [, int $whence] );
Description: Seeks on a file pointer
Prototype: bool rewind ( resource $handle );
Description: Rewind the position of a file pointer
Prototype: int ftell ( resource $handle );
Description: Tells file pointer read/write position
*/
// include the file.inc for common functions for test
include ("file.inc");
/* Testing fseek(),ftell(),rewind() functions
1. All write and create with write modes
2. Testing fseek() with whence = SEEK_CUR
*/
echo "*** Testing fseek(), ftell(), rewind() : whence = SEEK_CUR & all w and x modes ***\n";
$file_modes = array( "w","wb","wt","w+","w+b","w+t",
"x","xb","xt","x+","x+b","x+t");
$file_content_types = array( "text_with_new_line","alphanumeric");
$offset = array(-1,0,1,512,600); // different offsets
$filename = dirname(__FILE__)."/fseek_ftell_rewind_variation6.tmp"; // this is name of the file created by create_files()
/* open the file using $files_modes and perform fseek(),ftell() and rewind() on it */
foreach($file_content_types as $file_content_type){
echo "\n-- File having data of type ". $file_content_type ." --\n";
foreach($file_modes as $file_mode) {
echo "-- File opened in mode ".$file_mode." --\n";
$file_handle = fopen($filename, $file_mode);
if (!$file_handle){
echo "Error: failed to fopen() file: $filename!";
exit();
}
$data_to_be_written="";
fill_buffer($data_to_be_written, $file_content_type, 512); //get the data of size 512
$data_to_be_written = $data_to_be_written;
fwrite($file_handle,(binary)$data_to_be_written);
rewind($file_handle);
foreach($offset as $count){
var_dump( fseek($file_handle,$count,SEEK_CUR) );
var_dump( ftell($file_handle) ); // confirm the file pointer position
var_dump( feof($file_handle) ); //ensure that file pointer is not at end
} //end of offset loop
//close the file and check the size
fclose($file_handle);
var_dump( filesize($filename) );
delete_file($filename); // delete file with name
} //end of file_mode loop
} //end of file_content_types loop
echo "Done\n";
?>
--EXPECTF--
*** Testing fseek(), ftell(), rewind() : whence = SEEK_CUR & all w and x modes ***
-- File having data of type text_with_new_line --
-- File opened in mode w --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode wb --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode wt --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode w+ --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode w+b --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode w+t --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode x --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode xb --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode xt --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode x+ --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode x+b --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode x+t --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File having data of type alphanumeric --
-- File opened in mode w --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode wb --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode wt --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode w+ --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode w+b --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode w+t --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode x --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode xb --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode xt --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode x+ --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode x+b --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
-- File opened in mode x+t --
int(-1)
int(0)
bool(false)
int(0)
int(0)
bool(false)
int(0)
int(1)
bool(false)
int(0)
int(513)
bool(false)
int(0)
int(1113)
bool(false)
int(512)
Done