Comments about oreilly PHP Hacks:

Hack 26. Create the Google Maps Scrolling Effect

this code does not work for me.... can any one tell me correction

images> img01_01.jpg , img01_02.jpg , img01_03.jpg
img02_01.jpg , img02_02.jpg , img02_03.jpg
img03_01.jpg , img03_02.jpg , img03_03.jpg

[CODE]

<?php
$rows = 5;
$cols = 5;

$maxrows = 40;
$maxcols = 40;
$width = 200;
$height = 200;
?>

var origimgs = [];
<?php
for( $col = 0; $col < $maxcols; $col++ ) {
?>
origimgs[ ] = [];
<?php
for( $row = 0; $row < $maxrows; $row++ ) {
$id = sprintf( "img%02d_%02d", $row, $col );
?>
origimgs[ ][ ] = ".jpg";
<?php
} }
?>

var imgs = [];

function startup()
{
<?php
for( $col =+9 0; $col < $cols + 2; $col++ ) {
?>
imgs[] = [];
<?php
for( $row = 0; $row < $rows + 2; $row++ ) {
$id = sprintf( "img%02d_%02d", $row, $col );
?>
imgs[][] = document.getElementById( "" );
<?php
} }
?>
position(0,0);
}

var scrollrows = ;
var scrollcols = ;
var width = ;
var height = ;
var maxrows = ;
var maxcols = ;
var xpos = 0;
var ypos = 0;

document.onmousemove = function(e)
{
if ( dragging )
{

xpos += e.pageX - dragx;
ypos += e.pageY - dragy;

if ( xpos < 0 )
xpos = 0;
if ( ypos < 0 )
ypos = 0;

position( xpos, ypos );

dragx = e.pageX;
dragy = e.pageY;
}
}

document.onmousedown = function(e)
{
dragging = true;
dragx = e.pageX;
dragy = e.pageY;
}

document.onmouseup = function(e)
{
dragging = false;
}

function position( x, y )
{
if ( x < 0 ) x = 0;
if ( y < 0 ) y = 0;

startcol = Math.floor( x / width );
startrow = Math.floor( y / height );

offsetx = Math.abs( x - ( startcol * width ) ) * -1;
offsety = Math.abs( y - ( startrow * height ) ) * -1;

viewheight = ( scrollrows + 1 ) * height;
viewwidth = ( scrollcols + 1 ) * width;

for( var row = 0; row < scrollrows + 2; row++)
{
for( var col = 0; col < scrollcols + 2; col++)
{

var left = offsetx + ( col * width );
var top = offsety + ( row * height );
imgs[row][col].style.left = left;
imgs[row][col].style.top = top;
imgs[row][col].src = origimgs[startrow+row][startcol+col];

remainderx = viewwidth - ( left + width );
remaindery = viewheight - ( top + height );

if ( remainderx > width )
remainderx = width;
if ( remainderx < 0 )
remainderx = 0;
if ( remaindery > height )
remaindery = height;
if ( remaindery < 0 )
remaindery = 0;

imgs[row][col].style.clip = "rect( 0px 0px "+remaindery+ "px "+ remainderx+ "px )";
}
}
}

var dragging = false;
var dragx = 0;
var dragy = 0;

<?php
for( $row = 0; $row < $rows + 2; $row++ ) {
for( $col = 0; $col < $cols + 2; $col++ ) {
$id = sprintf( "img%02d_%02d", $row, $col );
?>
" />
<?php
} }
?>

[/CODE]

Comments about oreilly PHP Hacks:

1.there's no text file for sms hack in the examples they offer on the site.
2.the code is almost unexplained by the authors and full of mistakes.
3. some hacks are useless, for example, obscurejs, only laughing is caused by that hack.
4.I would say Chinese quality this book has.
5.the only value are some ideas but not the code.
I wouldn"t publish this book in such a bad quality state.

it seems that the authors are very avaricious of their ideas and because of low finance benefit they could receive from it they write it in such a low quality.

Sorry for my English.

Comments about oreilly PHP Hacks:

The book is really good, but there are some buts...there are some errors in the scripts, and it's very very difficult to find them for a begginer. I have download scripts, may be there the mistakes are absent.

Comments about oreilly PHP Hacks:

I really loved this book as I am a php beginner. I'm also glad because I could debug a file :

If you get the scripts at http://examples.oreilly.com/phphks/

Look for cal2.php in cal directory, it was a review made by Alexander Naumann.

The calendar script works well except in one case :

when the first day of month is a sunday !

To debug, find :

# numeric weekday of the first day in

# the current monthz

$day = jddayofweek( $jd ) - 1;

and just add : if ($day<0){$day=6;}

Finally your file will look this way :

# numeric weekday of the first day in

# the current monthz

$day = jddayofweek( $jd ) - 1; if ($day<0){$day=6;}

Enjoy this great calendar !

Comments about oreilly PHP Hacks:

I really enjoyed this book, it gave great, useful examples that every PHP-based website can use.

But my favorite part was that he devoted an entire chapter to Design Patterns and how they are applied to PHP programming.

As an experienced programmer, but novice PHP user I really liked the approach and it got me up and running fast.

Comments about oreilly PHP Hacks:

As a fan of the Hacks series, and as a fairly unexperienced PHP user, this book picked me up from the beginnings of PHP and dropped me off at the cutting edge, giving me the knowledge I yearned with a fun book through entertaining and often useful examples.

Comments about oreilly PHP Hacks:

I have found much that is useful - it has opened my eyes to new possibilities.

Sadly, the source code for Hack #88 is not included in the handy archive.I recreated it from a file on the Oreilly German site, and compared it to the code in the book. There appears to be a problem with the function parseXML () - it dies and displays the error "could not open XML input"

Comments about oreilly PHP Hacks:

Excellent PHP resource



I've read at least a dozen books on web development with PHP. This book is the best, by far!



The good:



Excellent coverage of elegant PHP for dealing with databases and XML

Outstanding explanation of automated code generation (a must for professional PHP developers)

Description (and code implementation) of how to use design patterns with PHP. Former J2EE guys will love this.

High quality prose and clear descriptions. I did not find any grammatical or spelling errors.

Light sense of humor (without the unnecessary banter that one finds in most "... for Dummies" books)



The bad:



Nothing.





As a software developer of 10 years, I give this book my highest recommendation.