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.
Table M-1. Tokens
Token Syntax Reference 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_CHARACTER T_CLASS class classes and objects T_CLOSE_TAG ?> or %> T_COMMENT // or # comments T_CONCAT_EQUAL .= assignment operators T_CONST const T_CONSTANT_ENCAPSED_STRING "foo" or 'bar' string syntax T_CONTINUE continue T_CURLY_OPEN T_DEC -- incrementing/decrementing operators T_DECLARE declare declare T_DEFAULT default switch T_DIV_EQUAL /= assignment operators T_DNUMBER 0.12, etc floating point numbers 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_ECHO echo echo() T_ELSE else else T_ELSEIF elseif elseif T_EMPTY empty empty() T_ENCAPSED_AND_WHITESPACE 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__ constants T_FOR for for T_FOREACH foreach foreach T_FUNCTION function or cfunction functions T_GLOBAL global variable scope T_IF if if T_INC ++ incrementing/decrementing operators T_INCLUDE include() include() T_INCLUDE_ONCE include_once() include_once() T_INLINE_HTML T_INT_CAST (int) or (integer) type-casting 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_SMALLER_OR_EQUAL <= comparison operators T_LINE __LINE__ 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_MINUS_EQUAL -= assignment operators T_ML_COMMENT /* and */ comments T_MOD_EQUAL %= assignment operators T_MUL_EQUAL *= assignment operators T_NEW new classes and objects T_NUM_STRING T_OBJECT_CAST (object) type-casting T_OBJECT_OPERATOR -> classes and objects T_OLD_FUNCTION old_function old_function 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 :: :: T_PLUS_EQUAL += assignment operators T_PRINT print() print() 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 T_STRING_CAST (string) type-casting T_STRING_VARNAME T_SWITCH switch switch T_UNSET unset() unset() T_UNSET_CAST (unset) (not documented; casts to NULL T_USE use (not implemented) T_VAR var classes and objects T_VARIABLE $foo variables T_WHILE while while , do..while T_WHITESPACE T_XOR_EQUAL ^= assignment operators T_FUNC_C __FUNCTION__ constants , since PHP 4.3.0T_CLASS_C __CLASS__ constants , since PHP 4.3.0
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