Conditionals: Difference between revisions
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A conditional statement evaluates an expression and executes instructions depending on the outcome of the evaluation. Most of the time, the evaluation is [[boolean]] (true or false). | A conditional statement evaluates an expression and executes instructions depending on the outcome of the evaluation. Most of the time, the evaluation is [[boolean]] (true or false). | ||
An example of a | An example of a simple conditional in PHP: | ||
<syntaxhighlight lang="php" linenumbers="yes"> | <syntaxhighlight lang="php" linenumbers="yes"> | ||
<?php | <?php | ||
# this file | # this file is used to teach the VERY BASICS of conditions in php | ||
$secret_number = 54; | $secret_number = 54; | ||
$player_guess = 54; | $player_guess = 54; | ||
if ($player_guess == $secret_number){ | if ($player_guess == $secret_number) { | ||
echo "You guessed it!"; | echo "You guessed it!"; | ||
Revision as of 21:24, 18 September 2016
Programming basics[1]
A conditional statement evaluates an expression and executes instructions depending on the outcome of the evaluation. Most of the time, the evaluation is boolean (true or false).
An example of a simple conditional in PHP:
<?php
# this file is used to teach the VERY BASICS of conditions in php
$secret_number = 54;
$player_guess = 54;
if ($player_guess == $secret_number) {
echo "You guessed it!";
} elseif ($player_guess >= $secret_number) {
echo "a bit high...";
} elseif ($player_guess <= $secret_number) {
echo "a bit low...";
}
?>
A video[edit]
This video references the C programming language and scratch, but the ideas about conditionals are excellent. In the case of conditionals, PHP and C share similar syntax (but not exact).
Standards[edit]
- Define the terms: variable, constant, operator, object.