John

In algebra, after we learn the basic distributive, commutative, and associative properties, the transitive property of equality is usually next in the curriculum. For those of you who do not recall the terminology, the transitive property of equality says if $a == $b and $b == $n then $a == $n. Using this age old logic, you can prove FALSE == TRUE and 0 == 1 in PHP. Here is how:

Code:

$a = 0;
$b = "Hooray for PHP logic and dynamic type casting?";
var_dump(((FALSE == 


...

Web developers are constantly validating data, either through JavaScript or through a server side programming language such as PHP. If you have done any PHP development, I am sure you have been in the situation where, if a request variable is set, you want want to use that value, if it is not set, you would like it to default to a specific value. The most common and logical method to accomplish this is to use an if/else block.

Code:

if(isset($_GET['foo'])) {
    $bar = $_GET['foo']; 


...

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Today, February 13, 2009 at 6:31 EST, the Unix time reached 1234567890. That is, 1,234,567,890 seconds since the Unix epoch (January 1, 1970).

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