CURLOPT_INFILESIZE: When you are
uploading a file to a remote site, this option should be used
to tell PHP what the expected size of the infile will be.
CURLOPT_VERBOSE: Set this option to a
non-zero value if you want CURL to report everything that is
CURLOPT_HEADER: Set this option to a
non-zero value if you want the header to be included in the
CURLOPT_NOPROGRESS: Set this option to
a non-zero value if you don't want PHP to display a progress
meter for CURL transfers.
PHP automatically sets this option to a non-zero parameter,
this should only be changed for debugging purposes.
CURLOPT_NOBODY: Set this option to a
non-zero value if you don't want the body included with the
CURLOPT_FAILONERROR: Set this option to
a non-zero value if you want PHP to fail silently if the HTTP
code returned is greater than 300. The default behavior is
to return the page normally, ignoring the code.
CURLOPT_UPLOAD: Set this option to a
non-zero value if you want PHP to prepare for an upload.
CURLOPT_POST: Set this option to a
non-zero value if you want PHP to do a regular HTTP POST.
This POST is a normal application/x-www-form-urlencoded
kind, most commonly used by HTML forms.
CURLOPT_FTPLISTONLY: Set this option to
a non-zero value and PHP will just list the names of an FTP
CURLOPT_FTPAPPEND: Set this option to a
non-zero value and PHP will append to the remote file instead
of overwriting it.
CURLOPT_NETRC: Set this option to a
non-zero value and PHP will scan your ~./netrc
file to find your username and password for the remote site that
you're establishing a connection with.
CURLOPT_FOLLOWLOCATION: Set this option
to a non-zero value to follow any "Location: " header that the
server sends as a part of the HTTP header (note this is
recursive, PHP will follow as many "Location: " headers that
it is sent.)
CURLOPT_PUT: Set this option to a non-zero
value to HTTP PUT a file. The file to PUT must be set with
the CURLOPT_INFILE and
CURLOPT_MUTE: Set this option to a
non-zero value and PHP will be completely silent with regards
to the CURL functions.
CURLOPT_TIMEOUT: Pass a long as a
parameter that contains the maximum time, in seconds, that
you'll allow the CURL functions to take.
CURLOPT_LOW_SPEED_LIMIT: Pass a long as
a parameter that contains the transfer speed in bytes per
second that the transfer should be below during
CURLOPT_LOW_SPEED_TIME seconds for PHP to
consider too slow and abort.
CURLOPT_LOW_SPEED_TIME: Pass a long as
a parameter that contains the time in seconds that the
transfer should be below the
CURLOPT_LOW_SPEED_LIMIT for PHP
to consider it too slow and abort.
CURLOPT_RESUME_FROM: Pass a long as a
parameter that contains the offset, in bytes, that you want
the transfer to start from.
CURLOPT_CAINFO: Pass a filename of a file
holding one or more certificates to verify the peer with. This only
makes sense when used in combination with the
CURLOPT_SSL_VERIFYPEER: Pass a long that is set
to a zero value to stop curl from verifying the peer's certificate
(curl 7.10 starting setting this option to TRUE by default).
Alternate certificates to verify against can be specified with the
CURLOPT_CAINFO option (added in curl 7.9.8)
or a certificate directory can be specified with the
CURLOPT_CAPATH option. As of curl 7.10, curl installs a
default bundle. CURLOPT_SSL_VERIFYHOST may
also need to be set to 1 or 0 if CURLOPT_SSL_VERIFYPEER
is disabled (it defaults to 2).
CURLOPT_SSLVERSION: Pass a long as a
parameter that contains the SSL version (2 or 3) to use. By
default PHP will try and determine this by itself, although,
in some cases you must set this manually.
CURLOPT_SSL_VERIFYHOST: Pass a long if
CURL should verify the Common name of the peer certificate in the
SSL handshake. A value of 1 denotes that we should check for the
existence of the common name, a value of 2 denotes that we should
make sure it matches the provided hostname.
CURLOPT_TIMECONDITION: Pass a long as a
parameter that defines how the
CURLOPT_TIMEVALUE is treated.
You can set this parameter to TIMECOND_IFMODSINCE or
TIMECOND_ISUNMODSINCE. This is a HTTP-only feature.
CURLOPT_TIMEVALUE: Pass a long as a
parameter that is the time in seconds since January 1st, 1970.
The time will be used as specified by the
option, or by default the TIMECOND_IFMODSINCE will be used.
CURLOPT_RETURNTRANSFER: Pass a non-zero
value if you want CURL to directly return the transfer instead
of printing it out directly.
CURLOPT_URL: This is the URL that you
want PHP to fetch. You can also set this option when
initializing a session with the curl_init()
CURLOPT_USERPWD: Pass a string
formatted in the [username]:[password] manner, for PHP to use
for the connection.
CURLOPT_PROXYUSERPWD: Pass a string
formatted in the [username]:[password] format for connection
to the HTTP proxy.
CURLOPT_RANGE: Pass the specified range
you want. It should be in the "X-Y" format, where X or Y may
be left out. The HTTP transfers also support several
intervals, separated with commas as in X-Y,N-M.
CURLOPT_POSTFIELDS: Pass a string
containing the full data to post in an HTTP "POST" operation.
CURLOPT_REFERER: Pass a string
containing the "referer" header to be used in an HTTP request.
CURLOPT_USERAGENT: Pass a string
containing the "user-agent" header to be used in an HTTP
CURLOPT_FTPPORT: Pass a string
containing the value which will be used to get the IP address to use
for the ftp "POST" instruction. The POST instruction tells
the remote server to connect to our specified IP address. The
string may be a plain IP address, a hostname, a network
interface name (under Unix), or just a plain '-' to use the
systems default IP address.
CURLOPT_COOKIE: Pass a string
containing the content of the cookie to be set in the HTTP
CURLOPT_SSLCERT: Pass a string
containing the filename of PEM formatted certificate.
CURLOPT_SSLCERTPASSWD: Pass a string
containing the password required to use the
CURLOPT_COOKIEFILE: Pass a string
containing the name of the file containing the cookie data.
The cookie file can be in Netscape format, or just plain
HTTP-style headers dumped into a file.
CURLOPT_CUSTOMREQUEST: Pass a string to
be used instead of GET or
HEAD when doing an HTTP request. This is
useful for doing DELETE or other, more
obscure, HTTP requests. Valid values are things like
GET, POST, and so on;
i.e. do not enter a whole HTTP request line here. For instance,
entering 'GET /index.html HTTP/1.0\r\n\r\n' would be incorrect.
Don't do this without making sure your server supports the
CURLOPT_PROXY: Give the name of the HTTP
proxy to tunnel requests through.
CURLOPT_INTERFACE: Pass the name of the
outgoing network interface to use. This can be an interface name,
an IP address or a host name.
CURLOPT_KRB4LEVEL: Pass the KRB4 (Kerberos
4) security level. Any of the following values (in
order from least to most powerful) are valid: 'clear', 'safe',
'confidential', 'private'. If the string does not match one of
these, then 'private' is used. Setting this Option to
NULL, will disable KRB4 security. Currently KRB4
security only works with FTP transactions.
CURLOPT_HTTPHEADER: Pass an array of HTTP
header fields to set.
CURLOPT_QUOTE: Pass an array of FTP commands
to perform on the server prior to the FTP request.
CURLOPT_POSTQUOTE: Pass an array of FTP
commands to execute on the server, after the FTP request has been
The following options expect a file descriptor that is obtained
by using the fopen() function: