目录
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PHP Reference
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PHP Array
- PHP Array
- array()
- array_change_key_case()
- array_chunk()
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- array_combine()
- array_count_values()
- array_diff()
- array_diff_assoc()
- array_diff_key()
- array_diff_uassoc()
- array_diff_ukey()
- array_fill()
- array_fill_keys()
- array_filter()
- array_flip()
- array_intersect()
- array_intersect_assoc()
- array_intersect_key()
- array_intersect_uassoc()
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- array_udiff()
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- array_udiff_uassoc()
- array_uintersect()
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- array_uintersect_uassoc()
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- array_values()
- array_walk()
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- arsort()
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- compact()
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- current()
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- end()
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- key()
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- PHP Calendar
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PHP Date
- PHP Date
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- date_isodate_set()
- date_modify()
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- date_time_set()
- date_timestamp_get()
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- date_timezone_get()
- date_timezone_set()
- date()
- getdate()
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- timezone_abbreviations_list()
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- PHP Directory
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PHP Filesystem
- PHP Filesystem
- basename()
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- rename()
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- PHP Filter
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PHP FTP
- PHP FTP
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- ftp_nb_continue()
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- ftp_nlist()
- ftp_pasv()
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- ftp_pwd()
- ftp_quit()
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- ftp_rename()
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- ftp_set_option()
- ftp_site()
- ftp_size()
- ftp_ssl_connect()
- ftp_systype()
- PHP JSON
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PHP Keywords
- PHP Keywords
- abstract
- and
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- PHP Libxml
- PHP Mail
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PHP Math
- PHP Math
- abs()
- acos()
- acosh()
- asin()
- asinh()
- atan()
- atan2()
- atanh()
- base_convert()
- bindec()
- ceil()
- cos()
- cosh()
- decbin()
- dechex()
- decoct()
- deg2rad()
- exp()
- expm1()
- floor()
- fmod()
- getrandmax()
- hexdec()
- hypot()
- intdiv()
- is_finite()
- is_infinite()
- is_nan()
- lcg_value()
- log()
- log10()
- log1p()
- max()
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- mt_getrandmax()
- mt_rand()
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- octdec()
- pi()
- pow()
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- rand()
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- sqrt()
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- tan()
- tanh()
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PHP Misc
- PHP Misc
- connection_aborted()
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- constant()
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- highlight_file()
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- pack()
- php_strip_whitespace()
- show_source()
- sleep()
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- time_nanosleep()
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- uniqid()
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PHP MySQLi
- PHP MySQLi
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- info
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PHP Network
- PHP Network
- checkdnsrr()
- closelog()
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- dns_get_mx()
- dns_get_record()
- fsockopen()
- gethostbyaddr()
- gethostbyname()
- gethostbynamel()
- gethostname()
- getmxrr()
- getprotobyname()
- getprotobynumber()
- getservbyname()
- getservbyport()
- header_register_callback()
- header_remove()
- header()
- headers_list()
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- http_response_code()
- inet_ntop()
- inet_pton()
- ip2long()
- long2ip()
- openlog()
- pfsockopen()
- setcookie()
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- socket_get_status()
- socket_set_blocking()
- socket_set_timeout()
- syslog()
- PHP Output Control
- PHP RegEx
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PHP SimpleXML
- PHP SimpleXML
- __construct()
- __tostring()
- addAttribute()
- addChild()
- asXML()
- attributes()
- children()
- count()
- getDocNamespaces()
- getName()
- getNamespaces()
- registerXPathNamespace()
- saveXML()
- simplexml_import_dom()
- simplexml_load_file()
- simplexml_load_string()
- xpath()
- current()
- getchildren()
- haschildren()
- key()
- next()
- rewind()
- valid()
- PHP Stream
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PHP String
- PHP String
- addcslashes()
- addslashes()
- bin2hex()
- chop()
- chr()
- chunk_split()
- convert_cyr_string()
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- count_chars()
- crc32()
- crypt()
- echo()
- explode()
- fprint()
- get_html_translation_table()
- hebrev()
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- hex2bin()
- html_entity_decode()
- htmlentities()
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- htmlspecialchars()
- implode()
- join()
- lcfirst()
- levenshtein()
- localeconv()
- ltrim()
- md5()
- md5_file()
- metaphone()
- money_format()
- nl_langinfo()
- nl2br()
- number_format()
- ord()
- parse_str()
- print()
- printf()
- quoted_printable_decode()
- quoted_printable_encode()
- quotemeta()
- rtrim()
- setlocale()
- sha1()
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- similar_text()
- soundex()
- sprintf()
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- str_getcsv()
- str_ireplace()
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- str_rot13()
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- strcasecmp()
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- strcmp()
- strcoll()
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- strip_tags()
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- strlen()
- strnatcasecmp()
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- strncasecmp()
- strncmp()
- strpbrk()
- strpos()
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- strrpos()
- strspn()
- strstr()
- strtok()
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- strtoupper()
- strtr()
- substr()
- substr_compare()
- substr_count()
- substr_replace()
- trim()
- ucfirst()
- ucwords()
- vfprintf()
- vprintf()
- vsprintf()
- wordwrap()
-
PHP Variable Handling
- PHP Variable Handling
- boolval()
- debug_zval_dump()
- doubleval()
- is_countable()
- empty()
- floatval()
- get_defined_vars()
- get_resource_type()
- gettype()
- intval()
- is_array()
- is_bool()
- is_callable()
- is_double()
- is_float()
- is_int()
- is_integer()
- is_iterable()
- is_long()
- is_null()
- is_numeric()
- is_object()
- is_real()
- is_resource()
- is_scalar()
- is_string()
- isset()
- print_r()
- serialize()
- settype()
- strval()
- unserialize()
- unset()
- var_dump()
- var_export()
-
PHP XML Parser
- PHP XML Parser
- utf8_decode()
- utf8_encode()
- xml_error_string()
- xml_get_current_byte_index()
- xml_get_current_column_number()
- xml_get_current_line_number()
- xml_get_error_code()
- xml_parse()
- xml_parse_into_struct()
- xml_parser_create_ns()
- xml_parser_create()
- xml_parser_free()
- xml_parser_get_option()
- xml_parser_set_option()
- xml_set_character_data_handler()
- xml_set_default_handler()
- xml_set_element_handler()
- xml_set_end_namespace_decl_handler()
- xml_set_external_entity_ref_handler()
- xml_set_notation_decl_handler()
- xml_set_object()
- xml_set_processing_instruction_handler()
- xml_set_start_namespace_decl_handler()
- xml_set_unparsed_entity_decl_handler()
- PHP Zip
- PHP Timezones
PHP getprotobyname() Function
Example
A getprotobyname() example:
<?php
$protocolnum = getprotobyname("tcp");
echo $protocolnum;
?>
Definition and Usage
The getprotobyname() function returns the protocol number for a given protocol name.
Syntax
getprotobyname(
protocolname)
Parameter Values
| Parameter | Description |
|---|---|
| protocolname | Required. Specifies a protocol name (like "tcp") |
Technical Details
| Return Value: | The protocol number on success. FALSE on failure. |
|---|---|
| PHP Version: | 4.0+ |
❮ PHP Network Reference
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