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PHP ftp_alloc () function

Syntax:
ftp_alloc ($ftp_connection, $filesize, $result); 
Parameter:this function takes three parameters as above and described below:
  • $ftp_connection:required. It specifies a pre-existing FTP connection that will be used to allocate space and download the file.
  • $filesize:Required. It defines the size of the file in bytes, i.e. the number of bytes to allocate.
  • $result:This parameter is optional. It defines a variable to store the response in it.
Return Value:Returns True on success or False on failure.Notes:
  • This function is available for PHP 5.0.0 and above.
  • The following examples cannot be run in the online IDE. So try running PHP on some hosting server or localhost with the correct ftp server name.
Below are examples to illustrate the ftp_alloc() function in PHP:Example 1:  
// Connect to the FTP server 
// Using the correct FTP server $ftp_server = "localhost" ;  
// Use correct ftp username $ftp_username = "user" ;  
// Use correct FTP password matching
// to the ftp username $ftp_userpass = "user" ;  
// File name or path for uploading to FTP server $file = "filetoupload.txt" ;  
// Setting up ftp connection $ftp_connection = ftp_connect ( $ftp_server ) or die ( "Could not connect to $ftp_server" ); if ( $ftp_connection ) { echo "successfully connected to the ftp server!" ; // Login to the established connection // with ftp username password $login = ftp_login ( $ftp_connection , $ftp_username , $ftp_userpass ); if ( $login ) { // Success check login echo "
logged in successfully! "
; // Allocate file space as specified // i.e. in the file $ if (ftp_alloc ( $ftp_connection , filesize ( $file ), $result )) { echo "
space successfully allocated on the FTP server"
; if (ftp_put ( $ftp_connection , "uploadedfile_name_in_server.txt" , $file , FTP_ASCII)) { echo "
Uploaded successful $file."
; } else { echo "
Error while uploading $file."
; } } else { echo "
space allocation failed!"
; } } else { echo "
login failed!"
; } // Close connection if (ftp_close ( $ftp_connection )) { echo "
Connection closed Successfully!"
; } }  
?>
Output:
successfully connected to the ftp server! logged in successfully! space successfully allocated on the FTP server Uploaded successful filetoupload.txt. Connection closed Successfully! 
Example 2Connect to the ftp server using port 21, then select and download the file.  
// Connect to the FTP server 
// Using the correct FTP server $ftp_server = "localhost" ;  
// Use correct ftp username $ftp_username = "user" ;  
// Use correct FTP password matching
// to the ftp username $ftp_userpass = "user" ;  
// File name or path for uploading to FTP server $file = "filetoupload.txt" ;  
// Setting up ftp connection $ftp_connection = ftp_connect ( $ftp_server , 21) or die ( "Could not connect to $ftp_server" ); if ( $ftp_connection ) { echo "successfully connected to the ftp server!" ; // Login to the established connection // with ftp username password $login = ftp_login ( $ftp_connection , $ftp_username , $ftp_userpass ); if ( $login ) { // Success check login echo "
logged in successfully! "
; // Allocate file space as specified // i.e. in the file $ if (ftp_alloc ( $ftp_connection , filesize ( $file ), $result )) { echo "
space successfully allocated on the FTP server"
; if (ftp_put ( $ftp_connection , "uploadedfile_name_in_server.txt" , $file , FTP_ASCII)) { echo "
Uploaded successful $file."
; } else { echo "
Error while uploading $file."
; } } else { echo "
space allocation failed!"
; } } else { echo "
login failed!"
; } // Close connection if (ftp_close ( $ftp_connection )) { echo "
Connection closed Successfully!"
; } }  
?>
Output:
successfully connected to the ftp server! logged in successfully! space successfully allocated on the FTP server Uploaded successful filetoupload.txt. Connection closed Successfully! 
Link: https://www.php. net / manual / en / function.ftp-alloc.php

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