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Dodatek P. 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.
Tabela P-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_CLONE | clone | classes and objects. PHP 5 only. |
| T_CLOSE_TAG | ?> or %> | |
| T_COMMENT | // or #, and /* */ on PHP 5 | 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_DOC_COMMENT | /** */ | PHPDoc style comments (PHP 5 only) |
| 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_IS_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 (PHP 4 only) |
| 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 | :: | ::. Also defined as T_DOUBLE_COLON. |
| T_PLUS_EQUAL | += | assignment operators |
| T_PRINT | print() | print() |
| T_PRIVATE | private | classes and objects. PHP 5 only. |
| T_PUBLIC | public | classes and objects. PHP 5 only. |
| T_PROTECTED | protected | classes and objects. PHP 5 only. |
| 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 4.3.0 |
| T_CLASS_C | __CLASS__ | constants, since PHP 4.3.0 |
See also token_name().
| Poprzedni | Spis treści | Następny |
| PHP type comparison tables | Początek rozdziału | About the manual |
Język PHP to dzisiaj powszechnie przyjęty standard, podstawa tworzenia dynamicznych stron WWW, opartych na bazach danych.
PHP to język skryptowy. Znaczy to, że jest to język nie kompilowalny. Program jest wykonywany przez interpreter na podstawie jego kodu źródłowego. Język PHP to element technologii internetowej SERVER-SIDE. Znaczy to, że kod języka jest wykonywany od strony serwera (na serwerze).
W jakim celu używac PHP? Po co to komu?
Załóżmy, że potrzebujemy takiej strony internetowej, która wyświetli zawsze bieżącą datę. Dzięki technologii PHP, datę i godzinę odczytywać można z miejsca gdzie wykonuje się skrypt, np. gdy serwer znajduje się w USA a my w Polsce to widoczna jest różnica w czasie który zostanie wyświetlony.
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