PHP type comparison tables
T_ENCAPSED_AND_WHITESPACED is returned when parsing strings with evaluated content, like "some $value" or this example from the Strings reference page:
<?php
echo <<<EOT
My name is "$name". I am printing some $foo->foo.
Now, I am printing some {$foo->bar[1]}.
This should print a capital 'A': \x41
EOT;
?>
This last example is tokenized as:
T_ECHO
echo
T_WHITESPACE
%20 (a space character)
T_START_HEREDOC
<<
T_ENCAPSED_AND_WHITESPACE
My name is "
T_VARIABLE
$name
T_ENCAPSED_AND_WHITESPACE
". I am printing some
T_VARIABLE
$foo
T_OBJECT_OPERATOR
->
T_STRING
foo
T_ENCAPSED_AND_WHITESPACE
. Now, I am printing some
T_CURLY_OPEN
{
T_VARIABLE
$foo
T_OBJECT_OPERATOR
->
T_STRING
bar
(terminal)
[
T_LNUMBER
1
(terminal)
]
(terminal)
}
T_ENCAPSED_AND_WHITESPACE
. This should print a capital 'A': \x41
T_END_HEREDOC
EOT
(terminal)
;
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_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 4.3.0 |
| T_CLASS_C | __CLASS__ | constants, since PHP 4.3.0 |
See also token_name().
add a note
User Contributed NotesList of Parser Tokens
fgm at osinet dot fr
22-Sep-2008 08:08
22-Sep-2008 08:08
nathan at unfinitydesign dot com
22-Sep-2008 12:52
22-Sep-2008 12:52
T_ENCAPSED_AND_WHITESPACE is whitespace which intersects a group of tokens. For example, an "unexpected T_ENCAPSED_AND_WHITESPACE" error is produced by the following code:
<?php
$main_output_world = 'snakes!'
echo('There are' 10 $main_output_world);
?>
Note the missing concatenation operator between the two strings leads to the whitespace error that is so named above. The concatenation operator instructs PHP to ignore the whitespace between the two code tokens (the so named "encapsed" data"), rather than parse it as a token itself.
The correct code would be:
<?php
$main_output_world = 'snakes!'
echo('There are' . 10 . $main_output_world);
?>
Note the addition of the concatenation operator between each token.
o_O Tync
04-Aug-2008 03:21
04-Aug-2008 03:21
Some tokens are not documented, so here they are:
all of them are located within non-constant ""-strings:
T_CHARACTER - \r\n\t... . They're presented AS IS and NOT replaced with actual characters
T_ENCAPSED_AND_WHITESPACE - whitespace
T_DOLLAR_OPEN_CURLY_BRACES - ${ (ONLY in non-constant ""-strings)
T_STRING - strings (example: "$a aa")
T_NUM_STRING - numbers (exaple: "$a 0")
still have no idea what T_ENCAPSED_AND_WHITESPACE means... :(