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PHP

PHP Operators
By: James Payne
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    2007-10-31


    Table of Contents:
  • PHP Operators
  • Assignment Operators
  • Arithmetic Operators
  • Incremental Operators
  • Better by Comparison
  • Logical Operators

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    PHP Operators
    ( Page 1 of 6 )

    What can you do without operators? Not much, if you're trying to do without them in a programming language, and PHP is no exception. On Monday, we barely had time to show you a long list of the operators in PHP. Today, we're going to show you what they do.

    In our last tutorial I left you with a giant table full of operators to study. But I know you, and you are a slacker, so instead of making you go back to that previous article like I should, I am going to spot you one and post it here for you again. That and well...it helps increase my word count. All hail laziness!

     

    Symbol

    What it Does

    Type

    +

    Used for Addition

    Arithmetic

    -

    Used for Subtraction

    Arithmetic

    *

    Used for Multiplication

    Arithmetic

    /

    Used for Dividing

    Arithmetic

    %

    Used for Modulation

    Arithmetic

    ++

    Used to increase value by one

    Arithmetic

    --

    Used to decrease value by one

    Arithmetic

    “=”

    Used to Assign a Value

    Assignment

    +=

    Used to Add and Assign a Value

    Assignment

    -=

    Used to Subtract and Assign a Value

    Assignment

    *=

    Used to Multiply and Assign a Value

    Assignment

    /=

    Used to Divide and Assign a Value

    Assignment

    .=

    String Concatenation

    Assignment

    %=

    Used to Modulate and Add a Value

    Assignment

    “==”

    Equal To

    Comparison

    !=

    Not Equal To

    Comparison

    >

    Greater Than

    Comparison

    <

    Less Than

    Comparison

    >=

    Greater Than or Equal To

    Comparison

    <=

    Less Than or Equal To

    Comparison

    &&

    This is the Logical (AND) Operator that Returns a True Value if All Expressions Being Checked Are True

    Logical

    ||

    This is the Logical (OR) Operator that Returns a True Value if Any of the Expressions Being Checked Are True

    Logical

    !

    This is the Logical (NOT) Operator that Returns a True Value if the Expression Being Checked Is Not True

    Logical

    So there you go. No, you aren't having deja vu. That's just a glitch in the Matrix. Like the third part in that movie series. I mean, way to ruin a trilogy. Let's create a third movie and then have the main characters, who have been the focus of the previous two movies, only be in the final installment for like 20 minutes. Don't get me started.

    Okay where was I?



     
     
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