Learning PHP and MySQL
Wednesday, July 19, 2006
Example 03-12 Using a variable in a string definition
<?php
$my_string = "Margaritaville - Suntan Oil Application!";
echo "Time for $my_string";
?>
Posted by krautgrrl on 07/19 at 03:43 PM
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Chapter 3 Code • (0) Comments • (3647) Trackbacks • Permalink
Example 03-13 Single quotes used in a string assignment
<?php
$my_string = 'Margaritaville - Suntan Oil Application!';
echo $my_string;
?>
Posted by krautgrrl on 07/19 at 03:44 PM
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Chapter 3 Code • (26) Comments • (150) Trackbacks • Permalink
Example 03-14 Various special characters in string assignments
<?php
$newline = "A newline is \n";
$return = "A carriage return is \r";
$tab = "A tab is \t";
$dollar = "A dollar sign is \$";
$doublequote = "A double-quote is \"";
?>
Posted by krautgrrl on 07/19 at 03:45 PM
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Chapter 3 Code • (3) Comments • (278) Trackbacks • Permalink
Example 03-15 Using echo with special characters
<?php
// This won't work because of the quotes around specialH2!
echo "<h2 class="specialH2">Margaritaville!</h2>";
?>
Posted by krautgrrl on 07/19 at 03:45 PM
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Chapter 3 Code • (2) Comments • (2037) Trackbacks • Permalink
Example 03-16 Correct escaping of special characters
<?php
// OK because we used single quotes
echo "<h2 class=\"specialH2\">Margaritaville!</h2>";
echo '<h2 class="specialH2">Margaritaville!</h2>';
?>
Posted by krautgrrl on 07/19 at 03:47 PM
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Chapter 3 Code • (27) Comments • (163) Trackbacks • Permalink
Example 03-17 Using strcmp to compare two stings
<?php
$name1 = "Bill";
$name2 = "BILL";
$result = strcasecmp($name1, $name2);
if (!$result){
echo "They match.";
}
?>
Returns:
They match.
Example 03-18 Concatenating strings together
<?php
$my_string = "Hello Max. My name is: ";
$newline = "<br />";
echo $my_string . "Paula" . $newline;
echo "Hi, I'm Max. Who are you? " . $my_string . $newline;
echo "Hi, I'm Max. Who are you? " . $my_string . "Paula";
//The last line is the same as echo "Hi, I’m max. Who are you? $my_string Paula";
?>
Posted by krautgrrl on 07/19 at 03:55 PM
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Chapter 3 Code • (27) Comments • (4) Trackbacks • Permalink
Example 03-19 Combining a string and a number
<?php
$str = "This is an example of ". 3 ." in the middle of a string.";
echo $str;
?>
Displays:
This is an example of 3 in the middle of a string.
Example 03-20 Using a constant in your program
<?php
define("HELLO", "Hello world!");
echo HELLO; // outputs "Hello world."
?>
Outputs:
Hello world!
Posted by krautgrrl on 07/19 at 03:56 PM
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Chapter 3 Code • (0) Comments • (45) Trackbacks • Permalink
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
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Chapter 3 Code • (26) Comments • (2) Trackbacks • Permalink
Thursday, August 03, 2006
Example 04-01 Sum of values
<?php
$Margaritaville = 3; // Three margaritas
$Sun_Tan_Application = 2; // Two applications of sun tan
$Fun_in_the_Sun = $Margaritaville + $Sun_Tan_Application;
echo $Fun_in_the_Sun;
?>
Posted by krautgrrl on 08/03 at 08:06 AM
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Chapter 4 Code • (0) Comments • (690) Trackbacks • Permalink
Example 04-02 Casting a variable
<?php
$test=1234;
$test_string=(string)$test;
?>
Posted by krautgrrl on 08/03 at 08:08 AM
Chapter 4 Code • (2) Comments • (103) Trackbacks • Permalink
Chapter 4 Code • (2) Comments • (103) Trackbacks • Permalink
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