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.
| 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().