PHP 101 (Part 2) - Shakespeare's Rose - Operating With Extreme Caution
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Of course, the example you've just seen is very rudimentary. To really add some punch to it, you need to know how to construct what the geeks call a conditional statement. And the very basis of a conditional statement is comparison - for example, "if this is equal to that, do thus and such".
PHP comes with a bunch of useful operators designed specifically for use in conditional statement. Here's a list:
Assume $delta = 12 and $omega = 9
Operator | What It Means | Expression | Evaluates To |
== | is equal to | $delta == $omega | False |
!= | is not equal to | $delta != $omega | True |
> | is greater than | $delta > $omega | True |
< | is less than | $delta < $omega | False |
>= | is greater than or equal to | $delta > = $omega | True |
<= | is less than or equal to | $delta <= $omega | False |
PHP4 also introduces a new operator, which tests both for equality and type: the === operator. There's a simple illustration of this on the last page.
Next: Shakespeare In The Matrix >>
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