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Twig documentation is licensed under the new BSD license.

Precedence	Operator	Type	Associativity	Description
512	`...`	prefix	n/a	Spread operator
=> 300	`\|`	infix	Left	Twig filter call
	`(`			Twig function call
	`.`, `?.`			Get an attribute on a variable
	`[`			Array access
500	`-`	prefix	n/a
	`+`
300 => 5	`??`	infix	Right	Null coalescing operator (a ?? b)
250	`=>`	infix	Left	Arrow function (x => expr)
200	`**`	infix	Right	Exponentiation operator
100	`is`	infix	Left	Twig tests
	`is not`			Twig tests
60	`*`	infix	Left
	`/`
	`//`			Floor division
	`%`
50 => 70	`not`	prefix	n/a
40 => 27	`~`	infix	Left
30	`+`	infix	Left
	`-`
25	`..`	infix	Left
20	`==`	infix	Left
	`!=`
	`<=>`
	`<`
	`>`
	`>=`
	`<=`
	`not in`
	`in`
	`matches`
	`starts with`
	`ends with`
	`has some`
	`has every`
	`===`
	`!==`
18	`b-and`	infix	Left
17	`b-xor`	infix	Left
16	`b-or`	infix	Left
15	`and`	infix	Left
12	`xor`	infix	Left
10	`or`	infix	Left
5	`?:`, `? :`	infix	Right	Elvis operator (a ?: b)
0	`(`	prefix	n/a	Explicit group expression (a)
	`?`	infix	Left	Conditional operator (a ? b : c)
	`=`		Right	Assignment operator
	`literal`	prefix	n/a	A literal value (boolean, string, number, sequence, mapping, ...)

When a precedence will change in 4.0, the new precedence is indicated by the arrow =>.

Here is the same table for Twig 4.0 with adjusted precedences:

Precedence	Operator	Type	Associativity	Description
512	`...`	prefix	n/a	Spread operator
	`(`	infix	Left	Twig function call
	`.`, `?.`			Get an attribute on a variable
	`[`			Array access
500	`-`	prefix	n/a
	`+`
300	`\|`	infix	Left	Twig filter call
250	`=>`	infix	Left	Arrow function (x => expr)
200	`**`	infix	Right	Exponentiation operator
100	`is`	infix	Left	Twig tests
	`is not`			Twig tests
70	`not`	prefix	n/a
60	`*`	infix	Left
	`/`
	`//`			Floor division
	`%`
30	`+`	infix	Left
	`-`
27	`~`	infix	Left
25	`..`	infix	Left
20	`==`	infix	Left
	`!=`
	`<=>`
	`<`
	`>`
	`>=`
	`<=`
	`not in`
	`in`
	`matches`
	`starts with`
	`ends with`
	`has some`
	`has every`
	`===`
	`!==`
18	`b-and`	infix	Left
17	`b-xor`	infix	Left
16	`b-or`	infix	Left
15	`and`	infix	Left
12	`xor`	infix	Left
10	`or`	infix	Left
5	`??`	infix	Right	Null coalescing operator (a ?? b)
	`?:`, `? :`			Elvis operator (a ?: b)
0	`(`	prefix	n/a	Explicit group expression (a)
	`?`	infix	Left	Conditional operator (a ? b : c)
	`=`		Right	Assignment operator
	`literal`	prefix	n/a	A literal value (boolean, string, number, sequence, mapping, ...)