PHP type comparison tables
Userland Naming Guide
Appendices
PHP Manual

# List of Parser Tokens

Various parts of the PHP language are represented internally by types like T_SR. PHP outputs identifiers like this one in parse errors, like "Parse error: unexpected T_SR, expecting ',' or ';' in script.php on line 10."

You're supposed to know what T_SR means. For everybody who doesn't know that, here is a table with those identifiers, PHP-syntax and references to the appropriate places in the manual.

> Note: Usage of T_* constants

> All tokens listed below are also defined as PHP constants. Their value is automatically generated based on PHP's underlying parser infrastructure. This means that the concrete value of a token may change between two PHP versions. For example the `T_FILE` constant is 365 in PHP 5.3, while the same value refers now to `T_TRAIT` in PHP 5.4 and the value of `T_FILE` is 369. 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. Instead your code should utilize custom values (using big numbers like 10000) and an appropriate strategy that will work with both PHP versions and T_* values.

Tokens
Token | Syntax | Reference
--- | --- | ---
`T_ABSTRACT` | abstract | Class Abstraction (available since PHP 5.0.0)
`T_AND_EQUAL` | &= | assignment operators
`T_ARRAY` | array() | array(), array syntax
`T_ARRAY_CAST` | (array) | type-casting
`T_AS` | as | foreach
`T_BAD_CHARACTER` |  | anything below ASCII 32 except \t (0x09), \n (0x0a) and \r (0x0d)
`T_BOOLEAN_AND` | && | logical operators
`T_BOOLEAN_OR` | || | logical operators
`T_BOOL_CAST` | (bool) or (boolean) | type-casting
`T_BREAK` | break | break
`T_CALLABLE` | callable | callable
`T_CASE` | case | switch
`T_CATCH` | catch | Exceptions (available since PHP 5.0.0)
`T_CHARACTER` |  | not used anymore
`T_CLASS` | class | classes and objects
`T_CLASS_C` | __CLASS__ | magic constants (available since PHP 4.3.0)
`T_CLONE` | clone | classes and objects (available since PHP 5.0.0)
`T_CLOSE_TAG` | ?> or %> | escaping from HTML
`T_COMMENT` | // or #, and /* */ in PHP 5 | comments
`T_CONCAT_EQUAL` | .= | assignment operators
`T_CONST` | const | class constants
`T_CONSTANT_ENCAPSED_STRING` | "foo" or 'bar' | string syntax
`T_CONTINUE` | continue | continue
`T_CURLY_OPEN` | {$ | complex variable parsed syntax
`T_DEC` | -- | incrementing/decrementing operators
`T_DECLARE` | declare | declare
`T_DEFAULT` | default | switch
`T_DIR` | __DIR__ | magic constants (available since PHP 5.3.0)
`T_DIV_EQUAL` | /= | assignment operators
`T_DNUMBER` | 0.12, etc | floating point numbers
`T_DOC_COMMENT` | /** */ | PHPDoc style comments (available since PHP 5.0.0)
`T_DO` | do | do..while
`T_DOLLAR_OPEN_CURLY_BRACES` | ${ | complex variable parsed syntax
`T_DOUBLE_ARROW` | => | array syntax
`T_DOUBLE_CAST` | (real), (double) or (float) | type-casting
`T_DOUBLE_COLON` | :: | see `T_PAAMAYIM_NEKUDOTAYIM` below
`T_ECHO` | echo | echo
`T_ELSE` | else | else
`T_ELSEIF` | elseif | elseif
`T_EMPTY` | empty | empty()
`T_ENCAPSED_AND_WHITESPACE` | " $a" | constant part of string with variables
`T_ENDDECLARE` | enddeclare | declare, alternative syntax
`T_ENDFOR` | endfor | for, alternative syntax
`T_ENDFOREACH` | endforeach | foreach, alternative syntax
`T_ENDIF` | endif | if, alternative syntax
`T_ENDSWITCH` | endswitch | switch, alternative syntax
`T_ENDWHILE` | endwhile | while, alternative syntax
`T_END_HEREDOC` |  | heredoc syntax
`T_EVAL` | eval() | eval()
`T_EXIT` | exit or die | exit(), die()
`T_EXTENDS` | extends | extends, classes and objects
`T_FILE` | __FILE__ | magic constants
`T_FINAL` | final | Final Keyword (available since PHP 5.0.0)
`T_FINALLY` | finally | Exceptions (available since PHP 5.5.0)
`T_FOR` | for | for
`T_FOREACH` | foreach | foreach
`T_FUNCTION` | function or cfunction | functions
`T_FUNC_C` | __FUNCTION__ | magic constants (available since PHP 4.3.0)
`T_GLOBAL` | global | variable scope
`T_GOTO` | goto | (available since PHP 5.3.0)
`T_HALT_COMPILER` | __halt_compiler() | __halt_compiler (available since PHP 5.1.0)
`T_IF` | if | if
`T_IMPLEMENTS` | implements | Object Interfaces (available since PHP 5.0.0)
`T_INC` | ++ | incrementing/decrementing operators
`T_INCLUDE` | include() | include
`T_INCLUDE_ONCE` | include_once() | include_once
`T_INLINE_HTML` |  | text outside PHP
`T_INSTANCEOF` | instanceof | type operators (available since PHP 5.0.0)
`T_INSTEADOF` | insteadof | Traits (available since PHP 5.4.0)
`T_INT_CAST` | (int) or (integer) | type-casting
`T_INTERFACE` | interface | Object Interfaces (available since PHP 5.0.0)
`T_ISSET` | isset() | isset()
`T_IS_EQUAL` | == | comparison operators
`T_IS_GREATER_OR_EQUAL` | >= | comparison operators
`T_IS_IDENTICAL` | === | comparison operators
`T_IS_NOT_EQUAL` | != or <> | comparison operators
`T_IS_NOT_IDENTICAL` | !== | comparison operators
`T_IS_SMALLER_OR_EQUAL` | <= | comparison operators
`T_LINE` | __LINE__ | magic constants
`T_LIST` | list() | list()
`T_LNUMBER` | 123, 012, 0x1ac, etc | integers
`T_LOGICAL_AND` | and | logical operators
`T_LOGICAL_OR` | or | logical operators
`T_LOGICAL_XOR` | xor | logical operators
`T_METHOD_C` | __METHOD__ | magic constants (available since PHP 5.0.0)
`T_MINUS_EQUAL` | -= | assignment operators
`T_ML_COMMENT` | /* and */ | comments (PHP 4 only)
`T_MOD_EQUAL` | %= | assignment operators
`T_MUL_EQUAL` | *= | assignment operators
`T_NAMESPACE` | namespace | namespaces (available since PHP 5.3.0)
`T_NS_C` | __NAMESPACE__ | namespaces (available since PHP 5.3.0)
`T_NS_SEPARATOR` | \ | namespaces (available since PHP 5.3.0)
`T_NEW` | new | classes and objects
`T_NUM_STRING` | "$a[0]" | numeric array index inside string
`T_OBJECT_CAST` | (object) | type-casting
`T_OBJECT_OPERATOR` | -> | classes and objects
`T_OLD_FUNCTION` | old_function | (PHP 4 only)
`T_OPEN_TAG` | <?php, <? or <% | escaping from HTML
`T_OPEN_TAG_WITH_ECHO` | <?= or <%= | escaping from HTML
`T_OR_EQUAL` | |= | assignment operators
`T_PAAMAYIM_NEKUDOTAYIM` | :: | ::. Also defined as `T_DOUBLE_COLON`.
`T_PLUS_EQUAL` | += | assignment operators
`T_PRINT` | print() | print
`T_PRIVATE` | private | classes and objects (available since PHP 5.0.0)
`T_PUBLIC` | public | classes and objects (available since PHP 5.0.0)
`T_PROTECTED` | protected | classes and objects (available since PHP 5.0.0)
`T_REQUIRE` | require() | require
`T_REQUIRE_ONCE` | require_once() | require_once
`T_RETURN` | return | returning values
`T_SL` | << | bitwise operators
`T_SL_EQUAL` | <<= | assignment operators
`T_SR` | >> | bitwise operators
`T_SR_EQUAL` | >>= | assignment operators
`T_START_HEREDOC` | <<< | heredoc syntax
`T_STATIC` | static | variable scope
`T_STRING` | parent, true 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` | (string) | type-casting
`T_STRING_VARNAME` | "${a | complex variable parsed syntax
`T_SWITCH` | switch | switch
`T_THROW` | throw | Exceptions (available since PHP 5.0.0)
`T_TRAIT` | trait | Traits (available since PHP 5.4.0)
`T_TRAIT_C` | __TRAIT__ | __TRAIT__ (available since PHP 5.4.0)
`T_TRY` | try | Exceptions (available since PHP 5.0.0)
`T_UNSET` | unset() | unset()
`T_UNSET_CAST` | (unset) | type-casting (available since PHP 5.0.0)
`T_USE` | use | namespaces (available since PHP 5.3.0; reserved since PHP 4.0.0)
`T_VAR` | var | classes and objects
`T_VARIABLE` | $foo | variables
`T_WHILE` | while | while, do..while
`T_WHITESPACE` | \t \r\n |
`T_XOR_EQUAL` | ^= | assignment operators
`T_YIELD` | yield | generators (available since PHP 5.5.0)

See also token_name().

PHP type comparison tables
Userland Naming Guide
Appendices
PHP Manual