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.

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_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_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_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` | "$a[a]" | string array index inside string
`T_STRING_CAST` | (string) | type-casting
`T_STRING_VARNAME` | "${a | complex variable parsed syntax
`T_SWITCH` | switch | switch
`T_THROW` | throw | Exceptions (available since PHP 5.0.0)
`T_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)
`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

See also token_name().

PHP type comparison tables
Userland Naming Guide
Appendices
PHP Manual