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.

Note: Usage of T_* constants

All tokens listed below are also defined as PHP constants. Their value is automatically generated based on PHP's underlying parser infrastructure. This means that the concrete value of a token may change between two PHP versions. For example the T_FILE constant is 365 in PHP 5.3, while the same value refers now to T_TRAIT in PHP 5.4 and the value of T_FILE is 369. This means that your code should never rely directly on the original T_* values taken from PHP version X.Y.Z, to provide some compatibility across multiple PHP versions. Instead your code should utilize custom values (using big numbers like 10000) and an appropriate strategy that will work with both PHP versions and T_* values.

**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_CALLABLE`	callable	callable
`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
`T_CLONE`	clone	classes and objects
`T_CLOSE_TAG`	?> or %>	escaping from HTML
`T_COMMENT`	// or #, and /* */	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
`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_ELLIPSIS`	...	function arguments (available since PHP 5.6.0)
`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
`T_FINALLY`	finally	Exceptions (available since PHP 5.5.0)
`T_FOR`	for	for
`T_FOREACH`	foreach	foreach
`T_FUNCTION`	function or cfunction	functions
`T_FUNC_C`	__FUNCTION__	magic constants
`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
`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
`T_INSTEADOF`	insteadof	Traits (available since PHP 5.4.0)
`T_INT_CAST`	(int) or (integer)	type-casting
`T_INTERFACE`	interface	Object Interfaces
`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_SPACESHIP`	<=>	comparison operators (available since PHP 7.0.0)
`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
`T_MINUS_EQUAL`	-=	assignment operators
`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_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_POW`	**	arithmetic operators (available since PHP 5.6.0)
`T_POW_EQUAL`	**=	assignment operators (available since PHP 5.6.0)
`T_PRINT`	print()	print
`T_PRIVATE`	private	classes and objects
`T_PUBLIC`	public	classes and objects
`T_PROTECTED`	protected	classes and objects
`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`	parent, self, etc.	identifiers, e.g. keywords like parent and self, function names, class names and more are matched. See also `T_CONSTANT_ENCAPSED_STRING`.
`T_STRING_CAST`	(string)	type-casting
`T_STRING_VARNAME`	"${a	complex variable parsed syntax
`T_SWITCH`	switch	switch
`T_THROW`	throw	Exceptions
`T_TRAIT`	trait	Traits (available since PHP 5.4.0)
`T_TRAIT_C`	__TRAIT__	__TRAIT__ (available since PHP 5.4.0)
`T_TRY`	try	Exceptions
`T_UNSET`	unset()	unset()
`T_UNSET_CAST`	(unset)	type-casting
`T_USE`	use	namespaces (available since PHP 5.3.0; reserved since PHP 4.0.0)
`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
`T_YIELD`	yield	generators (available since PHP 5.5.0)

User Contributed Notes

nathan at unfinitydesign dot com

7 years ago


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.

fgm at osinet dot fr

7 years ago


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)
  ;