# Php Short If

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

- 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.

## 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:

Operator | Description | Example | Result |
---|---|---|---|

`+` | Addition | `$x + $y` | Sum of $x and $y |

`-` | Subtraction | `$x - $y` | Difference of $x and $y. |

`*` | Multiplication | `$x * $y` | Product of $x and $y. |

`/` | Division | `$x / $y` | Quotient of $x and $y |

`%` | Modulus | `$x % $y` | Remainder 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.

Operator | Description | Example | Is 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.

Operator | Name | Example | Result |
---|---|---|---|

Equal | `$x $y` | True if $x is equal to $y | |

Identical | `$x $y` | True if $x is equal to $y, and they are of the same type | |

`!=` | Not equal | `$x != $y` | True if $x is not equal to $y |

`<>` | Not equal | `$x <> $y` | True if $x is not equal to $y |

`!` | Not identical | `$x ! $y` | True if $x is not equal to $y, or they are not of the same type |

`<` | Less than | `$x < $y` | True if $x is less than $y |

`>` | Greater than | `$x > $y` | True if $x is greater than $y |

`>=` | Greater than or equal to | `$x >= $y` | True if $x is greater than or equal to $y |

`<=` | Less than or equal to | `$x <= $y` | True 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.

Operator | Name | Effect |
---|---|---|

`++$x` | Pre-increment | Increments $x by one, then returns $x |

`$x++` | Post-increment | Returns $x, then increments $x by one |

`--$x` | Pre-decrement | Decrements $x by one, then returns $x |

`$x--` | Post-decrement | Returns $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.

Operator | Name | Example | Result |
---|---|---|---|

`and` | And | `$x and $y` | True if both $x and $y are true |

`or` | Or | `$x or $y` | True if either $x or $y is true |

`xor` | Xor | `$x xor $y` | True if either $x or $y is true, but not both |

`&&` | And | `$x && $y` | True if both $x and $y are true |

| Or | `$x $y` | True if either $x or $y is true |

`!` | Not | `!$x` | True 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.

Operator | Description | Example | Result |
---|---|---|---|

`.` | Concatenation | `$str1 . $str2` | Concatenation of $str1 and $str2 |

`.=` | Concatenation assignment | `$str1 .= $str2` | Appends 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:

Operator | Name | Example | Result |
---|---|---|---|

`+` | Union | `$x + $y` | Union of $x and $y |

Equality | `$x $y` | True if $x and $y have the same key/value pairs | |

Identity | `$x $y` | True if $x and $y have the same key/value pairs in the same order and of the same types | |

`!=` | Inequality | `$x != $y` | True if $x is not equal to $y |

`<>` | Inequality | `$x <> $y` | True if $x is not equal to $y |

`!` | Non-identity | `$x ! $y` | True 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: