Php Short If

In this tutorial you will learn how to manipulate or perform the operations on variables and values using operators in PHP.

  1. Php Shorthand If Null
  2. Php Short If
  3. Php Short If
  4. Php Short If Else
  5. Php Shorthand If Isset
  • The primary issue with PHP's short tags is that PHP managed to choose a tag ( XML. With the option enabled, you weren't able to raw output the xml declaration without getting syntax errors: This is a big issue when you consider how common XML parsing and management is.
  • PHP If condition can be compound condition. So, we can join multiple simple conditions with logical AND operator and use it as condition for PHP If statement. In this tutorial, we will go through the syntax of using AND operator in If-statement and some examples to understand the usage.

There are many names for this construct. The one liner if is also known as the ternary operator if you want to look it up in the PHP documentation. It has also been called the short if statement and the single line if statement. If you are like me, and continually having to look this up – here you go: One Line If Statement Example php $myvalue = 99.

What is Operators in PHP

Operators are symbols that tell the PHP processor to perform certain actions. For example, the addition (+) symbol is an operator that tells PHP to add two variables or values, while the greater-than (>) symbol is an operator that tells PHP to compare two values.

The following lists describe the different operators used in PHP.

Short

PHP Arithmetic Operators

The arithmetic operators are used to perform common arithmetical operations, such as addition, subtraction, multiplication etc. Here's a complete list of PHP's arithmetic operators:

OperatorDescriptionExampleResult
+Addition$x + $ySum of $x and $y
-Subtraction$x - $yDifference of $x and $y.
*Multiplication$x * $yProduct of $x and $y.
/Division$x / $yQuotient of $x and $y
%Modulus$x % $yRemainder of $x divided by $y

Php Shorthand If Null

The following example will show you these arithmetic operators in action:

PHP Assignment Operators

The assignment operators are used to assign values to variables.

OperatorDescriptionExampleIs The Same As
=Assign$x = $y$x = $y
+=Add and assign$x += $y$x = $x + $y
-=Subtract and assign$x -= $y$x = $x - $y
*=Multiply and assign$x *= $y$x = $x * $y
/=Divide and assign quotient$x /= $y$x = $x / $y
%=Divide and assign modulus$x %= $y$x = $x % $y

The following example will show you these assignment operators in action:

PHP Comparison Operators

Php Short If

The comparison operators are used to compare two values in a Boolean fashion.

OperatorNameExampleResult
Equal$x $yTrue if $x is equal to $y
Identical$x $yTrue if $x is equal to $y, and they are of the same type
!=Not equal$x != $yTrue if $x is not equal to $y
<>Not equal$x <> $yTrue if $x is not equal to $y
!Not identical$x ! $yTrue if $x is not equal to $y, or they are not of the same type
<Less than$x < $yTrue if $x is less than $y
>Greater than$x > $yTrue if $x is greater than $y
>=Greater than or equal to$x >= $yTrue if $x is greater than or equal to $y
<=Less than or equal to$x <= $yTrue if $x is less than or equal to $y

The following example will show you these comparison operators in action:

PHP Incrementing and Decrementing Operators

The increment/decrement operators are used to increment/decrement a variable's value.

OperatorNameEffect
++$xPre-incrementIncrements $x by one, then returns $x
$x++Post-incrementReturns $x, then increments $x by one
--$xPre-decrementDecrements $x by one, then returns $x
$x--Post-decrementReturns $x, then decrements $x by one

Php Short If

The following example will show you these increment and decrement operators in action:

PHP Logical Operators

The logical operators are typically used to combine conditional statements.

A rigorous description of crystal diffraction starts with a plane wave of electrons, treats each atom as an individual source of re-scattered spherical waves, and solves the three-dimensional problem of summing over all the expanding wavefronts. The standard solution is very interesting and elegant. Diffraction of Electrons In 1927, a paper by Davisson and Germer appeared in volume 30 of The Physical Review: The authors described a set of experiments in which they shot electrons at a crystal of nickel and measured the intensity of the scattered electron beam at different angles. Diffraction of electrons. Electron diffraction, interference effects owing to the wavelike nature of a beam of electrons when passing near matter. According to the proposal (1924) of the French physicist Louis de Broglie, electrons and other particles have wavelengths that are inversely proportional to their momentum. Performing an x-ray diffraction experiment. If electrons act like waves, we should be able to apply Bragg’s Law to the diffraction of electrons. In that case the beam would appear as concentric rings around a bright 18 Electron Diffraction. This pattern can be thought of as a one-dimensional diffraction.

OperatorNameExampleResult
andAnd$x and $yTrue if both $x and $y are true
orOr$x or $yTrue if either $x or $y is true
xorXor$x xor $yTrue if either $x or $y is true, but not both
&&And$x && $yTrue if both $x and $y are true
Or$x $yTrue if either $x or $y is true
!Not!$xTrue if $x is not true

The following example will show you these logical operators in action:

PHP String Operators

Php Short If Else

There are two operators which are specifically designed for strings.

OperatorDescriptionExampleResult
.Concatenation$str1 . $str2Concatenation of $str1 and $str2
.=Concatenation assignment$str1 .= $str2Appends the $str2 to the $str1

The following example will show you these string operators in action:

PHP Array Operators

The array operators are used to compare arrays:

OperatorNameExampleResult
+Union$x + $yUnion of $x and $y
Equality$x $yTrue if $x and $y have the same key/value pairs
Identity$x $yTrue if $x and $y have the same key/value pairs in the same order and of the same types
!=Inequality$x != $yTrue if $x is not equal to $y
<>Inequality$x <> $yTrue if $x is not equal to $y
!Non-identity$x ! $yTrue if $x is not identical to $y

The following example will show you these array operators in action:

PHP Spaceship Operator PHP 7

PHP 7 introduces a new spaceship operator (<=>) which can be used for comparing two expressions. It is also known as combined comparison operator.

Php Shorthand If Isset

The spaceship operator returns 0 if both operands are equal, 1 if the left is greater, and -1 if the right is greater. It basically provides three-way comparison as shown in the following table:

Operator<=> Equivalent
$x < $y($x <=> $y) -1
$x <= $y($x <=> $y) -1 ($x <=> $y) 0
$x $y($x <=> $y) 0
$x != $y($x <=> $y) ! 0
$x >= $y($x <=> $y) 1 ($x <=> $y) 0
$x > $y($x <=> $y) 1

The following example will show you how spaceship operator actually works: