List of Parser Tokens
Appendix
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Various parts of the PHP language are represented internally by tokens. A code snippet that contains an invalid sequence of tokens may lead to errors like Parse error: syntax error, unexpected token "==", expecting "(" in script.php on line 10." where token == is internally represented by T_IS_EQUAL.
Various parts of the PHP language are represented internally by tokens. A code snippet that contains an invalid sequence of tokens may lead to errors like Parse error: syntax error, unexpected token "==", expecting "(" in script.php on line 10." where token == is internally represented by T_IS_EQUAL.
The following table lists all tokens. They are also available as PHP constants.
Note
T_* constants values are automatically generated based on PHP's underlying parser infrastructure. This means that the concrete value of a token may change between two PHP versions. This means that your code should never rely directly on the original T_* values taken from PHP version X.Y.Z, to provide some compatibility across multiple PHP versions.
To make use of T_* constants across multiple PHP versions, undefined constants may be defined by the user (using big numbers like 10000) with an appropriate strategy that will work with both PHP versions and T_* values.
php
<?php
// Prior to PHP 7.4.0, T_FN is not defined.
defined('T_FN') || define('T_FN', 10001);
?>| Token | Syntax | Reference |
|---|---|---|
T_ABSTRACT (int) | abstract | language.oop5.abstract |
T_AMPERSAND_FOLLOWED_BY_VAR_OR_VARARG (int) | & | language.types.declarations (available as of PHP 8.1.0) |
T_AMPERSAND_NOT_FOLLOWED_BY_VAR_OR_VARARG (int) | & | language.types.declarations (available as of PHP 8.1.0) |
T_AND_EQUAL (int) | &= | assignment operators |
T_ARRAY (int) | array() | array(), array syntax |
T_ARRAY_CAST (int) | (array) | type-casting |
T_AS (int) | as | Foreach |
T_ATTRIBUTE (int) | #[ | attributes (available as of PHP 8.0.0) |
T_BAD_CHARACTER (int) | anything below ASCII 32 except \t (0x09), \n (0x0a) and \r (0x0d) (available as of PHP 7.4.0) | |
T_BOOLEAN_AND (int) | && | logical operators |
T_BOOLEAN_OR (int) | || | logical operators |
T_BOOL_CAST (int) | (bool) or (boolean) | type-casting |
T_BREAK (int) | break | break |
T_CALLABLE (int) | callable | callable |
T_CASE (int) | case | switch |
T_CATCH (int) | catch | language.exceptions |
T_CLASS (int) | class | classes and objects |
T_CLASS_C (int) | __CLASS__ | magic constants |
T_CLONE (int) | clone | classes and objects |
T_CLOSE_TAG (int) | ?> or %> | escaping from HTML |
T_COALESCE (int) | ?? | comparison operators |
T_COALESCE_EQUAL (int) | ??= | assignment operators (available as of PHP 7.4.0) |
T_COMMENT (int) | // or #, and /* */ | comments |
T_CONCAT_EQUAL (int) | .= | assignment operators |
T_CONST (int) | const | class constants |
T_CONSTANT_ENCAPSED_STRING (int) | "foo" or 'bar' | string syntax |
T_CONTINUE (int) | continue | continue |
T_CURLY_OPEN (int) | {$ | advanced variable string interpolation |
T_DEC (int) | -- | incrementing/decrementing operators |
T_DECLARE (int) | declare | declare |
T_DEFAULT (int) | default | switch |
T_DIR (int) | __DIR__ | magic constants |
T_DIV_EQUAL (int) | /= | assignment operators |
T_DNUMBER (int) | 0.12, etc. | floating point numbers |
T_DO (int) | do | do..while |
T_DOC_COMMENT (int) | /** */ | PHPDoc style comments |
T_DOLLAR_OPEN_CURLY_BRACES (int) | ${ | basic variable string interpolation |
T_DOUBLE_ARROW (int) | => | array syntax |
T_DOUBLE_CAST (int) | (real), (double) or (float) | type-casting |
T_DOUBLE_COLON (int) | :: | see T_PAAMAYIM_NEKUDOTAYIM below |
T_ECHO (int) | echo | echo() |
T_ELLIPSIS (int) | ... | function arguments |
T_ELSE (int) | else | else |
T_ELSEIF (int) | elseif | elseif |
T_EMPTY (int) | empty | empty() |
T_ENCAPSED_AND_WHITESPACE (int) | " $a" | constant part of string with variables |
T_ENDDECLARE (int) | enddeclare | declare, alternative syntax |
T_ENDFOR (int) | endfor | for, alternative syntax |
T_ENDFOREACH (int) | endforeach | Foreach, alternative syntax |
T_ENDIF (int) | endif | if, alternative syntax |
T_ENDSWITCH (int) | endswitch | switch, alternative syntax |
T_ENDWHILE (int) | endwhile | while, alternative syntax |
T_ENUM (int) | enum | Enumerations (available as of PHP 8.1.0) |
T_END_HEREDOC (int) | heredoc syntax | |
T_EVAL (int) | eval() | eval() |
T_EXIT (int) | exit or die | exit(), die() |
T_EXTENDS (int) | extends | extends, classes and objects |
T_FILE (int) | __FILE__ | magic constants |
T_FINAL (int) | final | language.oop5.final |
T_FINALLY (int) | finally | language.exceptions |
T_FN (int) | fn | arrow functions (available as of PHP 7.4.0) |
T_FOR (int) | for | for |
T_FOREACH (int) | foreach | Foreach |
T_FUNCTION (int) | function | functions |
T_FUNC_C (int) | __FUNCTION__ | magic constants |
T_GLOBAL (int) | global | variable scope |
T_GOTO (int) | goto | goto |
T_HALT_COMPILER (int) | __halt_compiler() | function.halt-compiler |
T_IF (int) | if | if |
T_IMPLEMENTS (int) | implements | language.oop5.interfaces |
T_INC (int) | ++ | incrementing/decrementing operators |
T_INCLUDE (int) | include | include() |
T_INCLUDE_ONCE (int) | include_once | include_once() |
T_INLINE_HTML (int) | text outside PHP | |
T_INSTANCEOF (int) | instanceof | type operators |
T_INSTEADOF (int) | insteadof | language.oop5.traits |
T_INTERFACE (int) | interface | language.oop5.interfaces |
T_INT_CAST (int) | (int) or (integer) | type-casting |
T_ISSET (int) | isset() | isset() |
T_IS_EQUAL (int) | == | comparison operators |
T_IS_GREATER_OR_EQUAL (int) | >= | comparison operators |
T_IS_IDENTICAL (int) | === | comparison operators |
T_IS_NOT_EQUAL (int) | != or <> | comparison operators |
T_IS_NOT_IDENTICAL (int) | !== | comparison operators |
T_IS_SMALLER_OR_EQUAL (int) | <= | comparison operators |
T_LINE (int) | __LINE__ | magic constants |
T_LIST (int) | list() | list() |
T_LNUMBER (int) | 123, 012, 0x1ac, etc. | integers |
T_LOGICAL_AND (int) | and | logical operators |
T_LOGICAL_OR (int) | or | logical operators |
T_LOGICAL_XOR (int) | xor | logical operators |
T_MATCH (int) | match | Match (available as of PHP 8.0.0) |
T_METHOD_C (int) | __METHOD__ | magic constants |
T_MINUS_EQUAL (int) | -= | assignment operators |
T_MOD_EQUAL (int) | %= | assignment operators |
T_MUL_EQUAL (int) | *= | assignment operators |
T_NAMESPACE (int) | namespace | namespaces |
T_NAME_FULLY_QUALIFIED (int) | \App\Namespace | namespaces (available as of PHP 8.0.0) |
T_NAME_QUALIFIED (int) | App\Namespace | namespaces (available as of PHP 8.0.0) |
T_NAME_RELATIVE (int) | namespace\Namespace | namespaces (available as of PHP 8.0.0) |
T_NEW (int) | new | classes and objects |
T_NS_C (int) | __NAMESPACE__ | namespaces |
T_NS_SEPARATOR (int) | \ | namespaces |
T_NUM_STRING (int) | "$a[0]" | numeric array index inside string |
T_OBJECT_CAST (int) | (object) | type-casting |
T_OBJECT_OPERATOR (int) | -> | classes and objects |
T_NULLSAFE_OBJECT_OPERATOR (int) | ?-> | classes and objects |
T_OPEN_TAG (int) | <?php, <? or <% | escaping from HTML |
T_OPEN_TAG_WITH_ECHO (int) | <?= or <%= | escaping from HTML |
T_OR_EQUAL (int) | |= | assignment operators |
T_PAAMAYIM_NEKUDOTAYIM (int) | :: | scope resolution. Also defined as T_DOUBLE_COLON. |
T_PIPE | |> | functional operators (available as of PHP 8.5.0) |
T_PLUS_EQUAL (int) | += | assignment operators |
T_POW (int) | ** | arithmetic operators |
T_POW_EQUAL (int) | **= | assignment operators |
T_PRINT (int) | print() | |
T_PRIVATE (int) | private | classes and objects |
T_PRIVATE_SET (int) | private(set) | property hooks (available as of PHP 8.4.0) |
T_PROPERTY_C (int) | __PROPERTY__ | magic constants (available as of PHP 8.4.0) |
T_PROTECTED (int) | protected | classes and objects |
T_PROTECTED_SET (int) | protected(set) | property hooks (available as of PHP 8.4.0) |
T_PUBLIC (int) | public | classes and objects |
T_PUBLIC_SET (int) | public(set) | property hooks (available as of PHP 8.4.0) |
T_READONLY (int) | readonly | classes and objects (available as of PHP 8.1.0) |
T_REQUIRE (int) | require | require() |
T_REQUIRE_ONCE (int) | require_once | require_once() |
T_RETURN (int) | return | returning values |
T_SL (int) | << | bitwise operators |
T_SL_EQUAL (int) | <<= | assignment operators |
T_SPACESHIP (int) | <=> | comparison operators |
T_SR (int) | >> | bitwise operators |
T_SR_EQUAL (int) | >>= | assignment operators |
T_START_HEREDOC (int) | <<< | heredoc syntax |
T_STATIC (int) | static | variable scope |
T_STRING (int) | parent, self, etc. | identifiers, e.g. keywords like parent and self, function names, class names and more are matched. See also T_CONSTANT_ENCAPSED_STRING. |
T_STRING_CAST (int) | (string) | type-casting |
T_STRING_VARNAME (int) | "${a | variable variables to interpolate in a string |
T_SWITCH (int) | switch | switch |
T_THROW (int) | throw | language.exceptions |
T_TRAIT (int) | trait | language.oop5.traits |
T_TRAIT_C (int) | __TRAIT__ | __TRAIT__ |
T_TRY (int) | try | language.exceptions |
T_UNSET (int) | unset() | unset() |
T_UNSET_CAST (int) | (unset) | type-casting |
T_USE (int) | use | namespaces |
T_VAR (int) | var | classes and objects |
T_VARIABLE (int) | $foo | variables |
T_VOID_CAST | (void) | void cast (available as of PHP 8.5.0) |
T_WHILE (int) | while | while, do..while |
T_WHITESPACE (int) | \t \r\n | |
T_XOR_EQUAL (int) | ^= | assignment operators |
T_YIELD (int) | yield | generators |
T_YIELD_FROM (int) | yield from | generators |
See also token_name().