myProgrammingNote

Sunday, January 2, 2011

php - header and footer

Header Section:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title><?php echo $page['title'];?></title>
</head>
<body>


<table width="90%" border="0" cellspacing="5" cellpadding="5">
<tr>
 <td><a href="#">Home</a></td>
 <td><a href="#">Site Map</a></td>
 <td><a href="#">Search</a></td>
 <td><a href="#">Help</a></td>
</tr>
</table>


Main Section:

<?php
// create an array to set page-level variables
$page = array();
$page['title'] = 'Product Catalog';
/* once the file is imported,
the variables set above will become available to it */

// include the page header
include('header.php');
?>



<?php

// include the page footer
include('footer.php');
?>

Footer Section:


 
<center>
Your usage of this site is subject to its published
<a href="tac.html">terms and conditions</a>
. Data is copyright Big Company Inc, 1995-<?php
echo date("Y", mktime()); ?></center
</body>
</html>

php - working with files

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>Untitled</title>
</head>
<body>
<?php

/*
* fopen() * returns "file handle"
*
* fread() *
*/

/*
// this does NOT work!
$file =
'http://localhost/testFolder/tetsuro/tetsuroP03_php_file/RandomSentences.txt'
or die('Could not open file!');
*/

// this works
$file =
'C:\wamp\www\testFolder\tetsuro\tetsuroP03_php_file\RandomSentences.txt'
or die('Could not open file!');

/*
// this works too
// note: the file is in the same folder as this php file.
$file = 'RandomSentences.txt' or die('Could not open file!');
*/

// open file
$fh = fopen($file, 'r') or die('Could not open file!');

// read file contents
$data = fread($fh, filesize($file)) or die('Could not read file!');

//
// some debug stuff
//
echo " ";
$size=filesize($file);
echo "total bytes in the file is $size";
echo " ";
echo "this is what's in the file handle: $fh";
echo " ";

// close file
fclose($fh);

// print file contents
echo $data;
echo " ";

/*
* file() * opens the file, reads it into an array and closes the file - all in one
*
* foreach() * using loop, use this command to read array
*
*/

echo 'using file()';
echo " ";
$file =
'C:\wamp\www\testFolder\tetsuro\tetsuroP03_php_file\RandomSentences.txt'
or die('Could not open file!');

// read file into array
$data = file($file) or die('Could not read file!');

// loop through array and print each line
foreach ($data as $line) {
echo $line;
}
echo " ";

/*
* file_get_contents() * reads the entire file into a string - all in one
*
*/

echo 'using file_get_contents()';
echo " ";
$file =
'C:\wamp\www\testFolder\tetsuro\tetsuroP03_php_file\RandomSentences.txt'
or die('Could not open file!');

// read file into string
$data = file_get_contents($file) or die('Could not read file!');

// print contents
echo $data;
echo " ";

?>
</body>
</html>

Saturday, January 1, 2011

php - working with array

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>Untitled</title>
</head>
<body>

<?php

//
// print_r()
// use it to debug array
//

echo 'using print_r() to debug anime list. ';
$animeGroupList=array('ninja'=>'naruto','zonbie'=>'high school of dead',
 'high shool'=>'bakuman','monster'=>'claymore');
print_r($animeGroupList);
echo ' ';
$animeList=array('naruto','high school of dead','bakuman','claymore');
print_r($animeList);
echo ' ';
echo ' ';

//
// array_push()
// add an element to the end
//
// note: does not work with associative arrays
//

$anime='bleach';
echo "using array_push(), added $anime at the end. ";
array_push($animeList,'bleach');
print_r($animeList);
echo ' ';
echo ' ';

//
// array_pop()
// remove an element from the end,
// and returns it
//

$anime=array_pop($animeList);
print_r($animeList);
echo ' ';
echo "using array_pop(), $anime was removed from the end of anime list.";
echo ' ';
echo ' ';

//
// array_shift()
// take an element off the beginning
//

$anime=array_shift($animeList);
print_r($animeList);
echo ' ';
echo "using array_shift(), removing $anime the beginning.";
echo ' ';
echo ' ';

//
// array_unshift()
// add an element to the beginning
//
// note: does not work with associative arrays
// note: returns the shifted value - NOT the element!
//

$anime=array_unshift($animeList, 'naruto');
print_r($animeList);
echo ' ';
echo "using array_unshift(), added $anime to beginning. ";
echo ' ';
echo ' ';

//
// explode()
// using a deliminater, splits a string into array elements
//

echo "using explode() ";
$str = 'shinigami, zombie, ninja';
echo "$str ";
$charactorTypeList = explode(', ', $str);
print_r($charactorTypeList);
echo ' ';
echo ' ';

//
// inplode()
// opposite of explode()
//

echo "using implode(), putting it back to a string ";
$str=implode(', ', $charactorTypeList);
echo $str;
echo ' ';
echo ' ';

//
// sort() and rsort()
//

echo 'original list';echo ' ';
print_r($charactorTypeList);
echo ' ';
echo ' ';
sort($charactorTypeList);
echo 'after sort()';
echo ' ';
print_r($charactorTypeList);
echo ' ';
echo ' ';
rsort($charactorTypeList);
echo 'after rsort() ';
echo ' ';
print_r($charactorTypeList);
echo ' ';
echo ' ';

//
// getting elements out of array
//

$artists = array('hikaru', 'yui', 'aki', 'ROOKiEZ is PUNK\'D');
for ($x = 0; $x < sizeof($artists); $x++){
 echo "<li> $artists[$x]";
// echo '<li>'.$artists[$x]; //this works too
}
print " ";
print " ";

//
// array_key()
// array_values()
// for associative array
//

echo 'print keys and values of array of: ';
echo "'ninja'=>'naruto','zonbie'=>'high school of dead',
 'high shool'=>'bakuman','monster'=>'claymore'";
print " ";
print " ";
$animeGroupList=array('ninja'=>'naruto','zonbie'=>'high school of dead',
 'high shool'=>'bakuman','monster'=>'claymore');
$result = array_keys($animeGroupList);
print_r($result);
print " ";
$result = array_values($animeGroupList);
print_r($result);
print " ";
print " ";

//
// foreach()
//

echo 'the list of artists: ';
$artists = array('hikaru', 'yui', 'aki', 'ROOKiEZ is PUNK\'D');
foreach($artists as $a){
 echo '<li>'.$a;
}

?>
</body>
</html>

php- form submit (another one)

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
 <title>Untitled</title>
</head>
<body>

<?php
/*
* if the "submit" variable does not exist,
* the form has not been submitted - display initial page
*/
if(!isset($_POST['submit'])){
?>
<form action="
 <?php echo $_SERVER['SCRIPT_NAME']; ?>"
 method="post">Print all the squares between 1 and
 <input type="text" name="limit" size="4" maxlength="4">
 <input type="submit" name="submit" value="Go">
</form>
<?php
}
else{
/*
* if the "submit" variable exists,
* the form has been submitted - look for and process form data
*/
// set variables from form input
$upperLimit = $_POST['limit'];
$lowerLimit = 1;
// keep printing squares until lower limit = upper limit
while ($lowerLimit <= $upperLimit) {
 echo ($lowerLimit * $lowerLimit).' ';
 $lowerLimit++;
}
// print end marker
echo 'END';
}
?>

</body>
</html>

php- form submit

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>Untitled</title>
</head>
<body>
<?php
/* if the "submit" variable does not exist,
* the form has not been submitted - display initial page */if(!isset($_POST['submit'])){
?>
 <form action="<?php echo $_SERVER['SCRIPT_NAME']; ?>" method="post">
 Enter your age: <input name="age" size="2">
 <input type="submit" name="submit" value="Go">
 </form>
<?php
}
else{
/* if the "submit" variable exists,
* the form has been submitted - look for and process form data
*/ // display result
 $age = $_POST['age'];
 if($age >= 21){
 echo 'Come on in, we have alcohol and music awaiting you!';
 }
 else{
 echo 'You\'re too young for this club,
 come back when you\'re a little older';
 }
}
?>

</body>
</html>

php - "===" operator

<?php

$str = '7';
$int = 7;

//usual stuff
$result = ($str == $int);
echo "result is $result ";

//returns false because type is not the same
$result = ($str === $int);
echo "result is $result ";

?>

php - String Concatenation Operator

The string concatenation operator, . is like + for numbers.

<?php
$str='the';
$str.='n';
echo $str; //prints out "then"
?>