PHP Skills Tests: Difference between revisions

Revision as of 18:13, 15 March 2016

Associativity	Operators	Additional information
non-associative	`clone` `new`	clone and new
left	`[`	array()
right	`**`	arithmetic
right	`++` `--` `~` `(int)` `(float)` `(string)` `(array)` `(object)` `(bool)` `@`	types and increment/decrement
non-associative	`instanceof`	types
right	`!`	logical
left	`*` `/` `%`	arithmetic
left	`+` `-` `.`	arithmetic and stirng
left	`<<` `>>`	bitwise
non-associative	`<` `<=` `>=` `>`	comparison
non-associative	`==` `!=` `===` `!==` `<>` `<=>`	comparison
left	`&`	bitwise and references
left	`^`	bitwise
left	`\|	bitwise
left	&&`	logical

TK

echo 0x500;
1280

This is hexidecimal notation. The value is calculated 0 * 1 = 0 + 0 * 16 = 0 + 5 * 256 = 1280.

TK

Magical constants are constants that change value depending on where in the code they are placed.

@@ Line 24: / Line 24: @@
 | `++` `--` `~` `(int)` `(float)` `(string)` `(array)` `(object)` `(bool)` `@`
 | types and increment/decrement
+|-
+| non-associative
+| `instanceof`
+| types
+|-
+| right
+| `!`
+| logical
+|-
+| left
+| `*` `/` `%`
+| arithmetic
+|-
+| left
+| `+` `-` `.`
+| arithmetic and stirng
+|-
+| left
+| `<<` `>>`
+| [http://php.net/manual/en/language.operators.bitwise.php bitwise]
+|-
+| non-associative
+| `<` `<=` `>=` `>`
+| comparison
+|-
+| non-associative
+| `==` `!=` `===` `!==` `<>` `<=>`
+| comparison
+|-
+| left
+| `&`
+| [http://php.net/manual/en/language.operators.bitwise.php bitwise] and references
+|-
+| left
+| `^`
+| [http://php.net/manual/en/language.operators.bitwise.php bitwise]
+|-
+| left
+| `<nowiki>|</nowiki>`
+| [http://php.net/manual/en/language.operators.bitwise.php bitwise]
+|-
+| left
+| `&&`
+| logical
 |}