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PHP -Tutorial

PHP-HOME PHP-Einführung PHP-Installation PHP-Syntax PHP-Kommentare PHP-Variablen
Variables Variables Scope
PHP-Echo / Drucken PHP-Datentypen PHP-Strings PHP-Nummern PHP-Mathematik PHP-Konstanten PHP-Operatoren PHP If...Else...Elseif PHP-Schalter PHP-Schleifen
Loops While Loop Do While Loop For Loop Foreach Loop Break/Continue
PHP-Funktionen PHP-Arrays
Arrays Indexed Arrays Associative Arrays Multidimensional Arrays Sorting Arrays
PHP-Superglobals
Superglobals $GLOBALS $_SERVER $_REQUEST $_POST $_GET
PHP-RegEx

PHP -Formulare

Handhabung von PHP-Formularen PHP-Formularvalidierung PHP-Formular erforderlich PHP-Formular-URL/E-Mail PHP-Formular vollständig

PHP- Erweitert

PHP-Datum und -Zeit PHP einschließen Umgang mit PHP-Dateien PHP-Datei öffnen/lesen PHP-Datei erstellen/schreiben Hochladen von PHP-Dateien PHP-Cookies PHP-Sitzungen PHP-Filter PHP-Filter für Fortgeschrittene PHP-Callback-Funktionen PHP-JSON PHP-Ausnahmen

PHP -OOP

PHP Was ist OOP PHP-Klassen/Objekte PHP-Konstruktor PHP-Destruktor PHP-Zugriffsmodifikatoren PHP-Vererbung PHP-Konstanten Abstrakte PHP-Klassen PHP-Schnittstellen PHP-Eigenschaften Statische PHP-Methoden Statische PHP-Eigenschaften PHP-Namespaces PHP-Iterables

MySQL- Datenbank

MySQL-Datenbank MySQL Connect MySQL-DB erstellen MySQL-Tabelle erstellen MySQL-Daten einfügen MySQL Letzte ID abrufen MySQL Mehrfach einfügen MySQL vorbereitet MySQL Select-Daten MySQL-Wo MySQL-Reihenfolge nach MySQL-Daten löschen MySQL-Update-Daten MySQL-Limit-Daten

PHP- XML

PHP-XML-Parser PHP-SimpleXML-Parser PHP SimpleXML - Get PHP-XML-Expat PHP-XML-DOM

PHP -AJAX

AJAX-Einführung AJAX-PHP AJAX-Datenbank AJAX-XML AJAX Live-Suche AJAX-Umfrage

PHP- Beispiele

PHP-Beispiele PHP-Compiler PHP-Quiz PHP-Übungen PHP-Zertifikat

PHP- Referenz

PHP-Übersicht PHP-Array
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()
PHP-Kalender
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()
PHP-Datum
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()
PHP-Verzeichnis
chdir() chroot() closedir() dir() getcwd() opendir() readdir() rewinddir() scandir()
PHP-Fehler
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()
PHP-Ausnahme
Exception() getCode() getFile() getMessage() getLine() getPrevious() getTrace() getTraceAsString()
PHP-Dateisystem
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()
PHP-Filter
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()
PHP-Schlüsselwörter
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()
PHP-Mail
ezmlm_hash() mail()
PHP-Mathematik
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-Sonstiges
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
PHP-Netzwerk
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() Header() headers_list() headers_sent() http_response_code() inet_ntop () inet_pton () ip2long() long2ip() openlog() pfsockopen() setcookie() setrawcookie () socket_get_status() socket_set_blocking() socket_set_timeout() Syslog()
PHP-Ausgabesteuerung
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()
PHP-RegEx
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()
PHP-Stream PHP-String
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()
Umgang mit PHP-Variablen
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
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
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()
PHP-Zeitzonen

PHP checkdnsrr() Funktion

❮ PHP-Netzwerkreferenz

Beispiel

DNS-Einträge prüfen:

<?php
$domain="w3schools.com";
if(checkdnsrr($domain,"MX")) {
  echo "Passed";
} else {
  echo "Failed";
}
?>

Definition und Verwendung

Die Funktion checkdnsrr() prüft DNS-Einträge auf den Typ , der host entspricht .

Wir können die Funktion checkdnsrr() verwenden, um unseren DNS-Eintrag zu überprüfen, um die Existenz eines Domainnamens zu überprüfen oder nicht.

Syntax

checkdnsrr(host, type)

Parameterwerte

Parameter Description
host Required. Specifies an IP address or host name to check
type Optional. Specifies the type. Can be one of the following:
  • A
  • MX (default)
  • NS
  • SOA
  • PTR
  • CNAME
  • AAAA
  • A6
  • SRV
  • NAPTR
  • TXT
  • ANY

Technische Details

Rückgabewert: TRUE, wenn Datensätze gefunden werden, andernfalls FALSE
PHP-Version: 4.0+
PHP-Änderungsprotokoll: PHP 5.3: Jetzt auf Windows-Plattformen verfügbar
PHP 5.2.4: Der TXT-Wert von type wurde hinzugefügt
❮ PHP-Netzwerkreferenz