core predefined constants
these constants are defined by the php core. this includes php, the zend engine, and sapi modules.
php_version (string) php_major_version (integer) available since php 5.2.7. php_minor_version (integer) available since php 5.2.7. php_release_version (integer) available since php 5.2.7. php_version_id (integer) available since php 5.2.7. php_extra_version (string) available since php 5.2.7. php_zts (integer) available since php 5.2.7. php_debug (integer) available since php 5.2.7. php_maxpathlen (integer) available since php 5.3.0. php_os (string) php_sapi (string) available since php 4.2.0. see also php_sapi_name(). php_eol (string) available since php 4.3.10 and php 5.0.2 php_int_max (integer) available since php 4.4.0 and php 5.0.5 php_int_size (integer) available since php 4.4.0 and php 5.0.5 default_include_path (string) pear_install_dir (string) pear_extension_dir (string) php_extension_dir (string) php_prefix (string) available since php 4.3.0 php_bindir (string) php_libdir (string) php_datadir (string) php_sysconfdir (string) php_localstatedir (string) php_config_file_path (string) php_config_file_scan_dir (string) php_shlib_suffix (string) available since php 4.3.0 php_output_handler_start (integer) php_output_handler_cont (integer) php_output_handler_end (integer) php_windows_version_major (integer) available since php 5.3.0 php_windows_version_minor (integer) available since php 5.3.0 php_windows_version_build (integer) available since php 5.3.0 php_windows_version_platform (integer) available since php 5.3.0 php_windows_version_sp_major (integer) available since php 5.3.0 php_windows_version_sp_minor (integer) available since php 5.3.0 php_windows_version_suitemask (integer) available since php 5.3.0 php_windows_version_producttype (integer) available since php 5.3.0 php_windows_nt_domain_controller (integer) available since php 5.3.0 php_windows_nt_server (integer) available since php 5.3.0 php_windows_nt_workstation (integer) available since php 5.3.0 e_error (integer) e_warning (integer) e_parse (integer) e_notice (integer) e_core_error (integer) e_core_warning (integer) e_compile_error (integer) e_compile_warning (integer) e_user_error (integer) e_user_warning (integer) e_user_notice (integer) e_deprecated (integer) available since php 5.3.0 e_user_deprecated (integer) available since php 5.3.0 e_all (integer) e_strict (integer) available since php 5.0.0 __compiler_halt_offset__ (integer) available since php 5.1.0 true (boolean) see booleans. false (boolean) see booleans. null (boolean) see null. see also: magic constants.
standard predefined constants
these constants are defined in php by default.
extr_overwrite (integer) extr_skip (integer) extr_prefix_same (integer) extr_prefix_all (integer) extr_prefix_invalid (integer) extr_prefix_if_exists (integer) extr_if_exists (integer) sort_asc (integer) sort_desc (integer) sort_regular (integer) sort_numeric (integer) sort_string (integer) case_lower (integer) case_upper (integer) count_normal (integer) count_recursive (integer) assert_active (integer) assert_callback (integer) assert_bail (integer) assert_warning (integer) assert_quiet_eval (integer) connection_aborted (integer) connection_normal (integer) connection_timeout (integer) ini_user (integer) ini_perdir (integer) ini_system (integer) ini_all (integer) m_e (float) m_log2e (float) m_log10e (float) m_ln2 (float) m_ln10 (float) m_pi (float) m_pi_2 (float) m_pi_4 (float) m_1_pi (float) m_2_pi (float) m_2_sqrtpi (float) m_sqrt2 (float) m_sqrt1_2 (float) crypt_salt_length (integer) crypt_std_des (integer) crypt_ext_des (integer) crypt_md5 (integer) crypt_blowfish (integer) directory_separator (string) seek_set (integer) seek_cur (integer) seek_end (integer) lock_sh (integer) lock_ex (integer) lock_un (integer) lock_nb (integer) html_specialchars (integer) html_entities (integer) ent_compat (integer) ent_quotes (integer) ent_noquotes (integer) info_general (integer) info_credits (integer) info_configuration (integer) info_modules (integer) info_environment (integer) info_variables (integer) info_license (integer) info_all (integer) credits_group (integer) credits_general (integer) credits_sapi (integer) credits_modules (integer) credits_docs (integer) credits_fullpage (integer) credits_qa (integer) credits_all (integer) str_pad_left (integer) str_pad_right (integer) str_pad_both (integer) pathinfo_dirname (integer) pathinfo_basename (integer) pathinfo_extension (integer) path_separator (string) char_max (integer) lc_ctype (integer) lc_numeric (integer) lc_time (integer) lc_collate (integer) lc_monetary (integer) lc_all (integer) lc_messages (integer) abday_1 (integer) abday_2 (integer) abday_3 (integer) abday_4 (integer) abday_5 (integer) abday_6 (integer) abday_7 (integer) day_1 (integer) day_2 (integer) day_3 (integer) day_4 (integer) day_5 (integer) day_6 (integer) day_7 (integer) abmon_1 (integer) abmon_2 (integer) abmon_3 (integer) abmon_4 (integer) abmon_5 (integer) abmon_6 (integer) abmon_7 (integer) abmon_8 (integer) abmon_9 (integer) abmon_10 (integer) abmon_11 (integer) abmon_12 (integer) mon_1 (integer) mon_2 (integer) mon_3 (integer) mon_4 (integer) mon_5 (integer) mon_6 (integer) mon_7 (integer) mon_8 (integer) mon_9 (integer) mon_10 (integer) mon_11 (integer) mon_12 (integer) am_str (integer) pm_str (integer) d_t_fmt (integer) d_fmt (integer) t_fmt (integer) t_fmt_ampm (integer) era (integer) era_year (integer) era_d_t_fmt (integer) era_d_fmt (integer) era_t_fmt (integer) alt_digits (integer) int_curr_symbol (integer) currency_symbol (integer) crncystr (integer) mon_decimal_point (integer) mon_thousands_sep (integer) mon_grouping (integer) positive_sign (integer) negative_sign (integer) int_frac_digits (integer) frac_digits (integer) p_cs_precedes (integer) p_sep_by_space (integer) n_cs_precedes (integer) n_sep_by_space (integer) p_sign_posn (integer) n_sign_posn (integer) decimal_point (integer) radixchar (integer) thousands_sep (integer) thousep (integer) grouping (integer) yesexpr (integer) noexpr (integer) yesstr (integer) nostr (integer) codeset (integer) log_emerg (integer) log_alert (integer) log_crit (integer) log_err (integer) log_warning (integer) log_notice (integer) log_info (integer) log_debug (integer) log_kern (integer) log_user (integer) log_mail (integer) log_daemon (integer) log_auth (integer) log_syslog (integer) log_lpr (integer) log_news (integer) log_uucp (integer) log_cron (integer) log_authpriv (integer) log_local0 (integer) log_local1 (integer) log_local2 (integer) log_local3 (integer) log_local4 (integer) log_local5 (integer) log_local6 (integer) log_local7 (integer) log_pid (integer) log_cons (integer) log_odelay (integer) log_ndelay (integer) log_nowait (integer) log_perror (integer)