(PHP 5, PHP 7, PHP 8)

ftp_allocAllocates space for a file to be uploaded


ftp_alloc(FTP\Connection $ftp, int $size, string &$response = null): bool

Sends an ALLO command to the remote FTP server to allocate space for a file to be uploaded.


Many FTP servers do not support this command. These servers may return a failure code (false) indicating the command is not supported or a success code (true) to indicate that pre-allocation is not necessary and the client should continue as though the operation were successful. Because of this, it may be best to reserve this function for servers which explicitly require preallocation.



Uma instância de FTP\Connection.


The number of bytes to allocate.


A textual representation of the servers response will be returned by reference in response if a variable is provided.

Valor Retornado

Retorna true em caso de sucesso ou false em caso de falha.

Registro de Alterações

Versão Descrição
8.1.0 O parâmetro ftp agora espera uma instância de FTP\Connection; anteriormente, um resource era esperado.


Exemplo #1 ftp_alloc() example


= "/home/user/myfile";

// connect to the server
$ftp = ftp_connect('ftp.example.com');
$login_result = ftp_login($ftp, 'anonymous', 'user@example.com');

if (
ftp_alloc($ftp, filesize($file), $result)) {
"Space successfully allocated on server. Sending $file.\n";
ftp_put($ftp, '/incoming/myfile', $file, FTP_BINARY);
} else {
"Unable to allocate space on server. Server said: $result\n";



Veja Também

  • ftp_put() - Uploads a file to the FTP server
  • ftp_fput() - Uploads from an open file to the FTP server

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