Source Code : Operators, precedence, and their associativity

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Operators, precedence, and their associativity

 
Operators                                                        Associativity
 
,             Left                                               "$x, $y, $z" is "($x, $y), $z"
 
or            Left                                               "$x OR $y OR $z" is "($x OR $y) OR $z"
 
xor           left                                               "x XOR y XOR z" is "($x XOR $y) XOR $z"
 
and           Left                                               "x AND y AND z" is "(x AND y) AND z"
 
= += -= * = /= .= %= &= |= ^= <<= gt;>=           Right          "$x /= $y /= $z" is "$x /= ($y /= $z)"
 
? :           Left  
||            Left                                               "$x || $y || $z" is "($x || $y) || $z"
 
&&            Left                                               "$x && $y && $z" is "($x && $y) && $z"
 
|             Left                                               "$x | $y | $z" is "($x | $y) | $z"
 
^             Left                                               "$x ^ $y ^ $z" is "($x ^ $y) ^ $z"
 
&             Left                                               "$x & $y & $z" is "($x & $y) & $z"
 
== != === !==                Non-associative
   
< < = > >=                    Non-associative
   
<< >>          Left                                               "$x >> $y >> $z" is "($x >> $y) >> $z"
 
+ - .          Left                                               "$x - $y - $z" is "($x - $y) - $z"
 
* / %          Left                                               "$x / $y / $z" is "($x / $y) / $z"
 
! ~ ++ -- (int) (float) (string)(array) (object) @     Right
   
[              Right  
new            Non-associative
  
  

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