Learning PHP and MySQL
Wednesday, July 19, 2006
Example 03-22 PHP mathematical function usage
<?php>
$sunny_days=300;
$Margaritaville_sunny_days_ratio=$sunny_days/365;
echo $Margaritaville_sunny_days_ratio;
?>
Example 03-23 Using autoincrement to add to a variable
<?php
$counter=1;
$counter++;
echo $counter
?>
Produces:
2
Example 03-24 Using the autodecrement operator
<?php
$counter=1;
$counter--;
echo $counter
?>
Produces:
0
Example 03-25 Using pre- and post-increment
<?php
$test=1;
echo "Preincrement: ".(++$test);
echo "<BR>";
echo "Value afterwords: ".$test;
echo "<BR>";
$test=1;
echo "Postincrement: ".($test++);
echo "<BR>";
echo "Value afterwords: ".$test;
?>
Produces:
Preincrement: 2
Value afterwords: 2
Postincrement: 1
Value afterwords: 2
Posted by krautgrrl on 07/19 at 03:59 PM
Chapter 3 Code • (26) Comments • (2) Trackbacks • Permalink
Chapter 3 Code • (26) Comments • (2) Trackbacks • Permalink
Example 3-21 Echoing the line and file predefined constants for a script called predefined_constants
<?php
echo "Executing line ". __LINE__ . " of PHP script " . __FILE__ . '.';
?>
Returns:
Executing line 2 of PHP script /home/www/html/oreilly/ch3/predefined_constants.php.
Posted by krautgrrl on 07/19 at 03:57 PM
Chapter 3 Code • (0) Comments • (1067) Trackbacks • Permalink
Chapter 3 Code • (0) Comments • (1067) Trackbacks • Permalink
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