PHP 5.4.31 Released

Constantes Pré-definidas

Principais Constantes Pré-definidas

Essas constantes são definidas pelo núcleo do PHP. Isso inclui PHP, o engine do Zend e módulos SAPI.

PHP_VERSION (string)
PHP_MAJOR_VERSION (integer)
Disponível desde PHP 5.2.7.
PHP_MINOR_VERSION (integer)
Disponível desde PHP 5.2.7.
PHP_RELEASE_VERSION (integer)
Disponível desde PHP 5.2.7.
PHP_VERSION_ID (integer)
Disponível desde PHP 5.2.7.
PHP_EXTRA_VERSION (string)
Disponível desde PHP 5.2.7.
PHP_ZTS (integer)
Disponível desde PHP 5.2.7.
PHP_DEBUG (integer)
Disponível desde PHP 5.2.7.
PHP_MAXPATHLEN (integer)
Disponível desde PHP 5.3.0.
PHP_OS (string)
PHP_SAPI (string)
Disponível dese o PHP 4.2.0. Veja também php_sapi_name().
PHP_EOL (string)
Disponível desde o PHP 4.3.10 e PHP 5.0.2
PHP_INT_MAX (integer)
Disponível desde o PHP 4.4.0 e PHP 5.0.5
PHP_INT_SIZE (integer)
Disponível desde o PHP 4.4.0 e PHP 5.0.5
DEFAULT_INCLUDE_PATH (string)
PEAR_INSTALL_DIR (string)
PEAR_EXTENSION_DIR (string)
PHP_EXTENSION_DIR (string)
PHP_PREFIX (string)
Disponível desde o 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)
Disponível desde o PHP 4.3.0
PHP_OUTPUT_HANDLER_START (integer)
PHP_OUTPUT_HANDLER_CONT (integer)
PHP_OUTPUT_HANDLER_END (integer)
PHP_WINDOWS_VERSION_MAJOR (integer)
Disponível desde o PHP 5.3.0
PHP_WINDOWS_VERSION_MINOR (integer)
Disponível desde o PHP 5.3.0
PHP_WINDOWS_VERSION_BUILD (integer)
Disponível desde o PHP 5.3.0
PHP_WINDOWS_VERSION_PLATFORM (integer)
Disponível desde o PHP 5.3.0
PHP_WINDOWS_VERSION_SP_MAJOR (integer)
Disponível desde o PHP 5.3.0
PHP_WINDOWS_VERSION_SP_MINOR (integer)
Disponível desde o PHP 5.3.0
PHP_WINDOWS_VERSION_SUITEMASK (integer)
Disponível desde o PHP 5.3.0
PHP_WINDOWS_VERSION_PRODUCTTYPE (integer)
Disponível desde o PHP 5.3.0
PHP_WINDOWS_NT_DOMAIN_CONTROLLER (integer)
Disponível desde o PHP 5.3.0
PHP_WINDOWS_NT_SERVER (integer)
Disponível desde o PHP 5.3.0
PHP_WINDOWS_NT_WORKSTATION (integer)
Disponível desde o 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)
Disponível desde o PHP 5.3.0
E_USER_DEPRECATED (integer)
Disponível desde o PHP 5.3.0
E_ALL (integer)
E_STRICT (integer)
Disponível desde o PHP 5.0.0
__COMPILER_HALT_OFFSET__ (integer)
Disponível desde o PHP 5.1.0
TRUE (boolean)
Veja Booleans.
FALSE (boolean)
Veja Booleans.
NULL (boolean)
Veja Null.

Veja Também: Constantes Mágicas.

Constantes Padrão Pré-definidas

Constantes definidas no PHP por padrão.

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)
add a note add a note

User Contributed Notes 5 notes

up
7
soywiz at gmail dot com
5 years ago
Another way to determine PHP_INT_MIN:

<?php
define
('PHP_INT_MIN', ~PHP_INT_MAX);
?>

It should work always:

MAX for 8bit-signed: 01111111
MIN for 8bit-signed: 10000000

In 32 bits:
php -r"echo (int)base_convert(str_repeat('1', 31), 2, 10) - PHP_INT_MAX;"
0
<?php echo ~(int)base_convert(str_repeat('1', 31), 2, 10); ?>
-2147483648
up
2
Anonymous
1 year ago
If you think a negation is too complex for determining INT_MIN, use an overflow:

<?php (int)(PHP_INT_MAX + 1); ?>
up
2
rdcapasso
10 months ago
Volker's getOS() function needs to have the order of cases changed in the switch statement since "darwin" contains "win", which means that both "windows" and "darwin" will return self::OS_WIN. I've moved the 'dar' case above the 'win' case:

<?php
class System {

    const
OS_UNKNOWN = 1;
    const
OS_WIN = 2;
    const
OS_LINUX = 3;
    const
OS_OSX = 4;

   
/**
     * @return int
     */
   
static public function getOS() {
        switch (
true) {
            case
stristr(PHP_OS, 'DAR'): return self::OS_OSX;
            case
stristr(PHP_OS, 'WIN'): return self::OS_WIN;
            case
stristr(PHP_OS, 'LINUX'): return self::OS_LINUX;
            default : return
self::OS_UNKNOWN;
        }
    }

}
?>
up
-2
espertalhao04 at hotmail dot com
9 months ago
here is one solution to calculate PHP_INT_SIZE, PHP_INT_MAX and PHP_INT_MIN :

<?php
define
('PHP_INT_SIZE',4+4*!!(255<<63));
define('PHP_INT_MIN', 255<<(PHP_INT_SIZE*8)-1);
define('PHP_INT_MAX',~PHP_INT_MIN);
?>

PHP_INT_MAX and PHP_INT_SIZE are not a must to define, if your system already has support for them.
up
-8
Volker
1 year ago
simple check for current OS:

<?php

class System {

    const
OS_UNKNWON = 1;
    const
OS_WIN = 2;
    const
OS_LINUX = 3;
    const
OS_OSX = 4;

   
/**
     * @return int
     */
   
static public function getOS() {
        switch (
true) {
            case
stristr(PHP_OS, 'WIN'): return self::OS_WIN;
            case
stristr(PHP_OS, 'DAR'): return self::OS_OSX;
            case
stristr(PHP_OS, 'LINUX'): return self::OS_LINUX;
            default : return
self::OS_UNKNWON;
        }
    }

}

?>
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