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stream_context_get_default

stream_context_get_default

(PHP 5 >= 5.1.0)

stream_context_get_defaultRetrieve the default streams context

说明

resource stream_context_get_default ([ array $options ] )

Returns the default stream context which is used whenever file operations (fopen(), file_get_contents(), etc...) are called without a context parameter. Options for the default context can optionally be specified with this function using the same syntax as stream_context_create().

参数

options
options must be an associative array of associative arrays in the format $arr['wrapper']['option'] = $value.

Note:

As of PHP 5.3.0, the stream_context_set_default() function can be used to set the default context.

返回值

A stream context resource.

范例

Example #1 Using stream_context_get_default()

<?php
$default_opts 
= array(
  
'http'=>array(
    
'method'=>"GET",
    
'header'=>"Accept-language: en " .
              
"Cookie: foo=bar",
    
'proxy'=>"tcp://10.54.1.39:8000"
  
)
);


$alternate_opts = array(
  
'http'=>array(
    
'method'=>"POST",
    
'header'=>"Content-type: application/x-www-form-urlencoded " .
              
"Content-length: " strlen("baz=bomb"),
    
'content'=>"baz=bomb"
  
)
);

$default stream_context_get_default($default_opts);
$alternate stream_context_create($alternate_opts);


readfile('http://www.example.com');


readfile('http://www.example.com'false$alternate);

?>

参见

  • stream_context_create() - Create a streams context
  • Listing of supported wrappers with context options (Supported Protocols and Wrappers).

  • set_socket_blocking
  • stream_bucket_append
  • stream_bucket_make_writeable
  • stream_bucket_new
  • stream_bucket_prepend
  • stream_context_create
  • stream_context_get_default
  • stream_context_get_options
  • stream_context_get_params
  • stream_context_set_default
  • stream_context_set_option
  • stream_context_set_params
  • stream_copy_to_stream
  • stream_encoding
  • stream_filter_append
  • stream_filter_prepend
  • stream_filter_register
  • stream_filter_remove
  • stream_get_contents
  • stream_get_filters
  • stream_get_line
  • stream_get_meta_data
  • stream_get_transports
  • stream_get_wrappers
  • stream_is_local
  • stream_notification_callback
  • stream_register_wrapper
  • stream_resolve_include_path
  • stream_select
  • stream_set_blocking
  • stream_set_read_buffer
  • stream_set_timeout
  • stream_set_write_buffer
  • stream_socket_accept
  • stream_socket_client
  • stream_socket_enable_crypto
  • stream_socket_get_name
  • stream_socket_pair
  • stream_socket_recvfrom
  • stream_socket_sendto
  • stream_socket_server
  • stream_socket_shutdown
  • stream_supports_lock
  • stream_wrapper_restore
  • stream_wrapper_unregister
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