How to use PHP Operators?

Hi Everybody, today we are going to learn, how operators can help us to make things helpful for us 🙂 .
There are various kind of operators, we are going to study few of most important operators;

• Assignment Operators

  Assignment operators are used with numeric values to write a value to a variable. The basic assignment operator is “=”. Left operand gets set to the value of the assignment expression on the right.

  Assignment	Similar
  x = y	x = y

  x += y	x = x + y
  x -= y	x = x – y
  x *= y	x = x * y
  x /= y	x = x / y
  x %= y	x = x % y

  As given in the table you can see that left section is similar to the right section. it means we can replace x=x+y with x+=y. so we can use the assignment operator with arithmetic operators in this way.

• String Operators

  a.) Concatenation(.) :
  It is used for concatenating two strings. suppose we want to concatenate two strings str1 and str2 and store it in str3.
  Example:

  $str3 = $str1 . $str2;

  b.) Concatenation assignment (.=) :
  It is used for appending a string into the other string. suppose there is a str1, want to append str2 into it, will write it like as;

  Example: $str1 .= $str2;

• Conditional Assignment Operators

Conditional assignment operators are used to set a value depending on conditions:

a.) Ternary (?:) : It is used as if-else condition.
Example: $x = expr1 ? expr2 : expr3

              Explanation: if expr1 is true then the value of x will be expr2 otherwise expr3.

b.) Null coalescing(??) :
Example: $x = expr1 ?? expr2

Explanation: if the expr1 exists and does not equal to NULL then the value of x will be expr1 otherwise expr2.

Hope it helps you to learn something new 🙂 Thanks!