HTML CSS JAVASCRIPT SQL PYTHON PHP HOW TO W3.CSS JAVA JQUERY C++ R React
ภาษาไทย Afrikaans العربية čeština Deutsch Español Français हिन्दी Bahasa Indonesia Italiano 日本語 한국어 မြန်မာဘာသာ Nederlands Polski Português Русский Türkçe Tiếng Việt

Esercitazione PHP

PHP HOME Introduzione a PHP Installazione PHP Sintassi PHP Commenti PHP Variabili PHP
Variabili Ambito delle variabili
PHP Eco/Stampa Tipi di dati PHP Stringhe PHP Numeri PHP PHP matematica Costanti PHP Operatori PHP PHP Se...Altro...Altro Passaggio PHP Ciclo PHP
Cicli Mentre Loop Fai mentre Loop Per Loop Foreach Loop Pausa/Continua
Funzioni PHP Matrici PHP
Matrici Array indicizzati Array associativi Array multidimensionali Sorting Arrays
Superglobali PHP
Superglobals $GLOBALS $_SERVER $_REQUEST $_POST $_GET
RegEx PHP

Moduli PHP

Gestione dei moduli PHP Convalida del modulo PHP Modulo PHP richiesto URL/e-mail del modulo PHP Modulo PHP completo

PHP avanzato

Data e ora PHP PHP Include Gestione dei file PHP Apri/Leggi file PHP Creazione/scrittura di file PHP Caricamento file PHP Cookie PHP Sessioni PHP Filtri PHP Filtri PHP avanzati Funzioni di callback PHP PHP JSON Eccezioni PHP

PHP OOP

PHP Che cos'è OOP Classi/Oggetti PHP Costruttore PHP PHP distruttore Modificatori di accesso PHP Ereditarietà PHP Costanti PHP Classi astratte PHP Interfacce PHP Tratti PHP Metodi statici PHP Proprietà statiche PHP Spazi dei nomi PHP Iterabili PHP

Database MySQL

Database MySQL MySQL Connect MySQL Crea DB MySQL Crea tabella Dati di inserimento MySQL MySQL Ottieni l'ultimo ID MySQL inserisce più MySQL preparato MySQL Seleziona dati MySQL dove MySQL Ordina per MySQL Elimina dati Dati di aggiornamento MySQL Dati limite MySQL

PHP XML

Parser XML PHP Analizzatore PHP SimpleXML PHP SimpleXML - Ottieni PHP XML espatriato PHP XML DOM

PHP - AJAX

Introduzione all'Ajax AJAX PHP Database AJAX XML AJAX Ricerca in tempo reale AJAX Sondaggio AJAX

Esempi PHP

Esempi PHP compilatore PHP Quiz PHP Esercizi PHP Certificato PHP

Riferimento PHP

Panoramica di PHP matrice PHP
array() array_change_key_case() array_chunk() array_column() 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() array_intersect_ukey() array_key_exists() array_keys() array_map() array_merge() array_merge_recursive() array_multisort() array_pad() array_pop() array_product() array_push() array_rand() array_reduce() array_replace() array_replace_recursive() array_reverse() array_search() array_shift() array_slice() array_splice() array_sum() array_udiff() array_udiff_assoc() array_udiff_uassoc() array_uintersect() array_uintersect_assoc() array_uintersect_uassoc() array_unique() array_unshift() array_values() array_walk() array_walk_recursive() arsort() asort() compact() count() current() each() end() extract() in_array() key() krsort() ksort() list() natcasesort() natsort() next() pos() prev() range() reset() rsort() shuffle() sizeof() sort() uasort() uksort() usort()
Calendario PHP
cal_days_in_month() cal_from_jd() cal_info() cal_to_jd() easter_date() easter_days() frenchtojd() gregoriantojd() jddayofweek() jdmonthname() jdtofrench() jdtogregorian() jdtojewish() jdtojulian() jdtounix() jewishtojd() juliantojd() unixtojd()
Data PHP
checkdate() date_add() date_create_from_format() date_create() date_date_set() date_default_timezone_get() date_default_timezone_set() date_diff() date_format() date_get_last_errors() date_interval_create_from_date_string() date_interval_format() date_isodate_set() date_modify() date_offset_get() date_parse_from_format() date_parse() date_sub() date_sun_info() date_sunrise() date_sunset() date_time_set() date_timestamp_get() date_timestamp_set() date_timezone_get() date_timezone_set() date() getdate() gettimeofday() gmdate() gmmktime() gmstrftime() idate() localtime() microtime() mktime() strftime() strptime() strtotime() time() timezone_abbreviations_list() timezone_identifiers_list() timezone_location_get() timezone_name_from_abbr() timezone_name_get() timezone_offset_get() timezone_open() timezone_transitions_get() timezone_version_get()
Directory PHP
chdir() chroot() closedir() dir() getcwd() opendir() readdir() rewinddir() scandir()
Errore PHP
debug_backtrace() debug_print_backtrace() error_get_last() error_log() error_reporting() restore_error_handler() restore_exception_handler() set_error_handler() set_exception_handler() trigger_error()
Eccezione PHP
Exception() getCode() getFile() getMessage() getLine() getPrevious() getTrace() getTraceAsString()
File system PHP
basename() chgrp() chmod() chown() clearstatcache() copy() delete() dirname() disk_free_space() disk_total_space() diskfreespace() fclose() feof() fflush() fgetc() fgetcsv() fgets() fgetss() file() file_exists() file_get_contents() file_put_contents() fileatime() filectime() filegroup() fileinode() filemtime() fileowner() fileperms() filesize() filetype() flock() fnmatch() fopen() fpassthru() fputcsv() fputs() fread() fscanf() fseek() fstat() ftell() ftruncate() fwrite() glob() is_dir() is_executable() is_file() is_link() is_readable() is_uploaded_file() is_writable() is_writeable() lchgrp() lchown() link() linkinfo() lstat() mkdir() move_uploaded_file() parse_ini_file() parse_ini_string() pathinfo() pclose() popen() readfile() readlink() realpath() realpath_cache_get() realpath_cache_size() rename() rewind() rmdir() set_file_buffer() stat() symlink() tempnam() tmpfile() touch() umask() unlink()
Filtro PHP
filter_has_var() filter_id() filter_input() filter_input_array() filter_list() filter_var() filter_var_array()
PHP FTP
ftp_alloc() ftp_cdup() ftp_chdir() ftp_chmod() ftp_close() ftp_connect() ftp_delete() ftp_exec() ftp_fget() ftp_fput() ftp_get() ftp_get_option() ftp_login() ftp_mdtm() ftp_mkdir() ftp_mlsd() ftp_nb_continue() ftp_nb_fget() ftp_nb_fput() ftp_nb_get() ftp_nb_put() ftp_nlist() ftp_pasv() ftp_put() ftp_pwd() ftp_quit() ftp_raw() ftp_rawlist() ftp_rename() ftp_rmdir() ftp_set_option() ftp_site() ftp_size() ftp_ssl_connect() ftp_systype()
PHP JSON
json_decode() json_encode()
Parole chiave PHP
abstract and as break callable case catch class clone const continue declare default do echo else elseif empty enddeclare endfor endforeach endif endswitch extends final finally fn for foreach function global if implements include include_once instanceof insteadof interface isset list namespace new or print private protected public require require_once return static switch throw trait try use var while xor yield yield from
PHP Libxml
libxml_clear_errors() libxml_disable_entity_loader() libxml_get_errors() libxml_get_last_error() libxml_set_external_entity_loader() libxml_set_streams_context() libxml_use_internal_errors()
Posta PHP
ezmlm_hash() mail()
PHP matematica
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() min() mt_getrandmax() mt_rand() mt_srand() octdec() pi() pow() rad2deg() rand() round() sin() sinh() sqrt() srand() tan() tanh()
PHP Varie
connection_aborted() connection_status() connection_timeout() constant() define() defined() die() eval() exit() get_browser() __halt_compiler() highlight_file() highlight_string() hrtime() ignore_user_abort() pack() php_strip_whitespace() show_source() sleep() sys_getloadavg() time_nanosleep() time_sleep_until() uniqid() unpack() usleep()
PHP MySQLi
affected_rows autocommit change_user character_set_name close commit connect connect_errno connect_error data_seek debug dump_debug_info errno error error_list fetch_all fetch_array fetch_assoc fetch_field fetch_field_direct fetch_fields fetch_lengths fetch_object fetch_row field_count field_seek get_charset get_client_info get_client_stats get_client_version get_connection_stats get_host_info get_proto_info get_server_info get_server_version info init insert_id kill more_results multi_query next_result options ping poll prepare query real_connect real_escape_string real_query reap_async_query refresh rollback select_db set_charset set_local_infile_handler sqlstate ssl_set stat stmt_init thread_id thread_safe use_result warning_count
Rete PHP
checkdnsrr() closelog() dns_check_record() dns_get_mx() dns_get_record() fsockopen() gethostbyaddr() gethostbyname() gethostbyname() gethostname() getmxrr() getprotobyname() getprotobynumber() getservbyname() getservbyport() header_register_callback() header_remove() intestazione() headers_list() headers_sent() http_codice_risposta() inet_ntop () inet_pton () ip2long() long2ip() openlog() pfsockopen() setcookie() setraw cookie () socket_get_status() socket_set_blocking() socket_set_timeout() syslog()
Controllo dell'output PHP
flush() ob_clean() ob_end_clean() ob_end_flush() ob_flush() ob_get_clean() ob_get_contents() ob_get_flush() ob_get_length() ob_get_level() ob_gzhandler() ob_implicit_flush() ob_list_handlers() ob_start() output_add_rewrite_var() output_reset_rewrite_vars()
RegEx PHP
preg_filter() preg_grep() preg_last_error() preg_match() preg_match_all() preg_replace preg_replace_callback preg_replace_callback_array preg_split preg_quote
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()
Flusso PHP Stringa PHP
addcslashes() addslashes() bin2hex() chop() chr() chunk_split() convert_cyr_string() convert_uudecode() convert_uuencode() count_chars() crc32() crypt() echo() explode() fprint() get_html_translation_table() hebrev() hebrevc() hex2bin() html_entity_decode() htmlentities() htmlspecialchars_decode() 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() sha1_file() similar_text() soundex() sprintf() sscanf() str_getcsv() str_ireplace() str_pad() str_repeat() str_replace() str_rot13() str_shuffle() str_split() str_word_count() strcasecmp() strchr() strcmp() strcoll() strcspn() strip_tags() stripcslashes() stripslashes() stripos() stristr() strlen() strnatcasecmp() strnatcmp() strncasecmp() strncmp() strpbrk() strpos() strrchr() strrev() strripos() strrpos() strspn() strstr() strtok() strtolower() strtoupper() strtr() substr() substr_compare() substr_count() substr_replace() trim() ucfirst() ucwords() vfprintf() vprintf() vsprintf() wordwrap()
Gestione delle variabili PHP
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()
Analizzatore XML PHP
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()
Zip PHP
zip_close() zip_entry_close() zip_entry_compressedsize() zip_entry_compressionmethod() zip_entry_filesize() zip_entry_name() zip_entry_open() zip_entry_read() zip_open() zip_read()
Fuso orario PHP

PHP dns_get_record() Funzione

❮ Riferimento alla rete PHP

Esempio

Ottiene i record delle risorse MX associati a "www.w3schools.com":

<?php
print_r(dns_get_record("w3schools.com", DNS_MX));
?>

Definizione e utilizzo

La funzione dns_get_record() ottiene i record di risorse DNS associati al nome host specificato.

Sintassi

dns_get_record(hostname, type, authns, addtl, raw)

Valori dei parametri

Parameter Description
hostname Required. Specifies a hostname (like "www.w3schools.com")
type Optional. Specifies the resource record type to search for. Can be one of the following:
  • DNS_A
  • DNS_CNAME
  • DNS_HINFO
  • DNS_CAA
  • DNS_MX
  • DNS_NS
  • DNS_PTR
  • DNS_SOA
  • DNS_TXT
  • DNS_AAAA
  • DNS_SRV
  • DNS_NAPTR
  • DNS_A6
  • DNS_ALL
  • DNS_ANY (default)
authns Optional. Passed by reference and, if set, it will be populated with Resource Records for the Authoritative Name Servers
addtl Optional. Passed by reference and, if set, it will be populated with any Additional Records
raw Optional. A Boolean value. If set to TRUE, it queries only the requested type instead of looping type-by-type before getting the info stuff. Default is FALSE

Dettagli tecnici

Valore di ritorno:

Un array di array associativi, FALSE in caso di errore. Ogni array contiene le seguenti chiavi (almeno):

  • host - Il nome host
  • class - Restituisci sempre IN (perché questa funzione restituisce solo record di classe Internet)
  • type - Il tipo di record
  • ttl - "Time To Live" rimanente per questo record (ttl originale meno il tempo trascorso da quando il server è stato interrogato)

Altre chiavi negli array dipendono dal parametro type .
Versione PHP: 5.0+
Registro delle modifiche PHP: PHP 7.0.16: Aggiunto supporto per il tipo DNS_CAA .
PHP 5.4: Aggiunto il parametro grezzo .
PHP 5.3: disponibile su piattaforme Windows.
❮ Riferimento alla rete PHP