pChart don't draw texts - php

I'm trying to drawn a chart with php and the pChart framework. The issue is that the texts of charts are not being drawn.
include "pChart2.1.1/class/pData.class.php";
include "pChart2.1.1/class/pDraw.class.php";
include "pChart2.1.1/class/pImage.class.php";
$myData = new pData();
## DEFINITION OF SERIES AND X AXIS... ##
$myData->setAbscissa("Absissa");
$myData->setAxisPosition(0, AXIS_POSITION_LEFT);
$myData->setAxisName(0, "1st axis");
$myData->setAxisUnit(0, "");
$myPicture = new pImage(1024, 600, $myData);
$Settings = array("R" => 255, "G" => 255, "B" => 255, "Dash" => 1, "DashR" => 275, "DashG" => 275, "DashB" => 275);
$myPicture->drawFilledRectangle(0, 0, 1024, 600, $Settings);
$myPicture->drawRectangle(0, 0, 1023, 599, array("R" => 0, "G" => 0, "B" => 0));
$myPicture->setShadow(TRUE, array("X" => 1, "Y" => 1, "R" => 50, "G" => 50, "B" => 50, "Alpha" => 20));
$myPicture->setFontProperties(array("FontName" => "fonts/Bedizen.ttf", "FontSize" => 40));
$TextSettings = array("Align" => TEXT_ALIGN_TOPMIDDLE, "R" => 255, "G" => 255, "B" => 255);
$myPicture->drawText(512, 25, "Abertura Geral", $TextSettings);
$myPicture->setShadow(TRUE);
$myPicture->setGraphArea(50, 50, 999, 560);
$myPicture->setFontProperties(array("R" => 0, "G" => 0, "B" => 0, "FontName" => "fonts/pf_arma_five.ttf", "FontSize" => 6));
$Settings = array("Pos" => SCALE_POS_LEFTRIGHT
, "Mode" => SCALE_MODE_FLOATING
, "LabelingMethod" => LABELING_ALL
, "GridR" => 255, "GridG" => 255, "GridB" => 255, "GridAlpha" => 50, "TickR" => 0, "TickG" => 0, "TickB" => 0, "TickAlpha" => 50, "LabelRotation" => 0, "CycleBackground" => 1, "DrawXLines" => 1, "DrawSubTicks" => 1, "SubTickR" => 255, "SubTickG" => 0, "SubTickB" => 0, "SubTickAlpha" => 50, "DrawYLines" => ALL);
$myPicture->drawScale($Settings);
$myPicture->setShadow(TRUE, array("X" => 1, "Y" => 1, "R" => 50, "G" => 50, "B" => 50, "Alpha" => 10));
$Config = "";
$myPicture->drawLineChart($Config);
$Config = array("FontR" => 0, "FontG" => 0, "FontB" => 0, "FontName" => "fonts/pf_arma_five.ttf", "FontSize" => 6, "Margin" => 6, "Alpha" => 30, "BoxSize" => 5, "Style" => LEGEND_NOBORDER,
"Mode" => LEGEND_HORIZONTAL);
$myPicture->drawLegend(938, 16, $Config);
$myPicture->render("/tmp/t2.png");
And the result is a chart without any text.
Thank you for the help.


I think this is your problem
$TextSettings = array("Align" => TEXT_ALIGN_TOPMIDDLE, "R" => 255, "G" => 255, "B" => 255);
The text is white, same as the background you should change this line for this:
$TextSettings = array("Align" => TEXT_ALIGN_TOPMIDDLE, "R" => 0, "G" => 0, "B" => 0);
I hope that is all. Good luck

Related

php divide parent array into multiple small arrays based on the parent array value

I've have this array $weights as you can see it has some range values like 1-10, now I also have another array which also has some range values like 2-5, Now I want to have a new array which must have values like 1-1, 2-5, 6-7, 8-10 not 1-10. Hope you get the problem,
<?php
$outputs = [];
$weights = [
["from_weight" => 1, "to_weight" => 10, "weight_cost" => 5 , "type" => "express"],
["from_weight" => 11, "to_weight" => 20, "weight_cost" => 10, "type" => "express"],
["from_weight" => 21, "to_weight" => 30, "weight_cost" => 15, "type" => "express"],
["from_weight" => 1, "to_weight" => 20, "weight_cost" => 3, "type" => "firstcl"],
];
$coupons = [
["from_weight" => 2, "to_weight" => 5, "weight_cost" => 2 , "type" => "express"],
["from_weight" => 8, "to_weight" => 10, "weight_cost" => 3 , "type" => "express"],
];
// LOOP IN $weights
foreach($weights as $weight){
// CHECK ALL $coupons FOR EACH $weight
foreach($coupons as $coupon){
// CHECK IF $coupon APPLICABLE FOR $weight
if($weight["from_weight"] <= $coupon["from_weight"] &&
$weight["to_weight"] >= $coupon["to_weight"] &&
$weight["type"] == $coupon["type"]){
// REMOVE PARENT WEIGHT & ADD CHILD WEIGHTS
}
}
}
print_r($outputs);
// EXPECTING
$results = [
["from_weight" => 1, "to_weight" => 1, "weight_cost" => 5 , "type" => "express"], // UP 5->5
["from_weight" => 2, "to_weight" => 5, "weight_cost" => 2 , "type" => "express"], // UP 5->2
["from_weight" => 6, "to_weight" => 7, "weight_cost" => 5 , "type" => "express"], // UP 5->5
["from_weight" => 8, "to_weight" => 10, "weight_cost" => 3 , "type" => "express"], // UP 5->3
["from_weight" => 11, "to_weight" => 20, "weight_cost" => 10, "type" => "express"],
["from_weight" => 21, "to_weight" => 30, "weight_cost" => 15, "type" => "express"],
["from_weight" => 1, "to_weight" => 20, "weight_cost" => 3, "type" => "firstcl"],
];
Thanks
// EXPECTING
$results = [
["from_weight" => 1, "to_weight" => 1, "weight_cost" => 5 , "type" => "express"], // UP 5->5
["from_weight" => 2, "to_weight" => 5, "weight_cost" => 2 , "type" => "express"], // UP 5->2
["from_weight" => 6, "to_weight" => 7, "weight_cost" => 5 , "type" => "express"], // UP 5->5
["from_weight" => 8, "to_weight" => 10, "weight_cost" => 3 , "type" => "express"], // UP 5->3
["from_weight" => 11, "to_weight" => 20, "weight_cost" => 10, "type" => "express"],
["from_weight" => 21, "to_weight" => 30, "weight_cost" => 15, "type" => "express"],
["from_weight" => 1, "to_weight" => 20, "weight_cost" => 3, "type" => "firstcl"],
];

PHP: Group timestamps in days, weeks, months, years

In my application I am using RRD, but in several specific scenarios I want to fetch and group data (by days, weeks, months, years based on timestamps).
Here is an example to understand me better:
We have array with two data sources (all, active). In each data source, keys are timestamps and interval between timestamps is 86400 sec.
$arr = [
"all" => [
"1664236800" => 0,
"1664323200" => 0,
"1664409600" => 0,
"1664496000" => 0,
"1664582400" => 0,
"1664668800" => 0,
"1664755200" => 0,
"1664841600" => 0,
"1664928000" => 0,
"1665014400" => 0,
"1665100800" => 0,
"1665187200" => 0,
"1665273600" => 0,
"1665360000" => 0,
"1665446400" => 0,
"1665532800" => 0,
"1665619200" => 0,
"1665705600" => 0,
"1665792000" => 0,
"1665878400" => 0,
"1665964800" => 0,
"1666051200" => 0,
"1666137600" => 0,
"1666224000" => 0,
"1666310400" => 0,
"1666396800" => 0,
"1666483200" => 0,
"1666569600" => 0,
"1666656000" => 0,
"1666742400" => 0,
"1666828800" => 0,
"1666915200" => 0,
"1667001600" => 0,
"1667088000" => 0,
"1667174400" => 0,
"1667260800" => 0,
"1667347200" => 0,
"1667433600" => 0,
"1667520000" => 0,
"1667606400" => 0,
"1667692800" => 0,
"1667779200" => 0,
"1667865600" => 0,
"1667952000" => 0,
"1668038400" => 0,
"1668124800" => 0,
"1668211200" => 0,
"1668297600" => 0,
"1668384000" => 0,
"1668470400" => 0,
"1668556800" => 0,
"1668643200" => 0,
"1668729600" => 0,
"1668816000" => 0,
"1668902400" => 0,
"1668988800" => 0,
"1669075200" => 0,
"1669161600" => 0,
"1669248000" => 0,
"1669334400" => 0,
"1669420800" => 0,
"1669507200" => 0,
"1669593600" => 0,
"1669680000" => 0,
"1669766400" => 0,
"1669852800" => 0,
"1669939200" => 0,
"1670025600" => 0,
"1670112000" => 0,
"1670198400" => 0,
"1670284800" => 0,
"1670371200" => 0,
"1670457600" => 0,
"1670544000" => 0,
"1670630400" => 0,
"1670716800" => 0,
"1670803200" => 0,
"1670889600" => 0,
"1670976000" => 0,
"1671062400" => 0,
"1671148800" => 0,
"1671235200" => 0,
"1671321600" => 0,
"1671408000" => 0,
"1671494400" => 0,
"1671580800" => 0,
"1671667200" => 0,
"1671753600" => 0,
"1671840000" => 0,
"1671926400" => 0,
"1672012800" => 0,
"1672099200" => 0,
"1672185600" => 0,
"1672272000" => 0,
],
"active" => [
"1664236800" => 0,
"1664323200" => 0,
"1664409600" => 0,
"1664496000" => 0,
"1664582400" => 0,
"1664668800" => 0,
"1664755200" => 0,
"1664841600" => 0,
"1664928000" => 0,
"1665014400" => 0,
"1665100800" => 0,
"1665187200" => 0,
"1665273600" => 0,
"1665360000" => 0,
"1665446400" => 0,
"1665532800" => 0,
"1665619200" => 0,
"1665705600" => 0,
"1665792000" => 0,
"1665878400" => 0,
"1665964800" => 0,
"1666051200" => 0,
"1666137600" => 0,
"1666224000" => 0,
"1666310400" => 0,
"1666396800" => 0,
"1666483200" => 0,
"1666569600" => 0,
"1666656000" => 0,
"1666742400" => 0,
"1666828800" => 0,
"1666915200" => 0,
"1667001600" => 0,
"1667088000" => 0,
"1667174400" => 0,
"1667260800" => 0,
"1667347200" => 0,
"1667433600" => 0,
"1667520000" => 0,
"1667606400" => 0,
"1667692800" => 0,
"1667779200" => 0,
"1667865600" => 0,
"1667952000" => 0,
"1668038400" => 0,
"1668124800" => 0,
"1668211200" => 0,
"1668297600" => 0,
"1668384000" => 0,
"1668470400" => 0,
"1668556800" => 0,
"1668643200" => 0,
"1668729600" => 0,
"1668816000" => 0,
"1668902400" => 0,
"1668988800" => 0,
"1669075200" => 0,
"1669161600" => 0,
"1669248000" => 0,
"1669334400" => 0,
"1669420800" => 0,
"1669507200" => 0,
"1669593600" => 0,
"1669680000" => 0,
"1669766400" => 0,
"1669852800" => 0,
"1669939200" => 0,
"1670025600" => 0,
"1670112000" => 0,
"1670198400" => 0,
"1670284800" => 0,
"1670371200" => 0,
"1670457600" => 0,
"1670544000" => 0,
"1670630400" => 0,
"1670716800" => 0,
"1670803200" => 0,
"1670889600" => 0,
"1670976000" => 0,
"1671062400" => 0,
"1671148800" => 0,
"1671235200" => 0,
"1671321600" => 0,
"1671408000" => 0,
"1671494400" => 0,
"1671580800" => 0,
"1671667200" => 0,
"1671753600" => 0,
"1671840000" => 0,
"1671926400" => 0,
"1672012800" => 0,
"1672099200" => 0,
"1672185600" => 0,
"1672272000" => 0,
]
];
I want to group this data in months.
The example response:
$arr = [
"1664236800" => [ // 27 September ( this is first value from fetch array)
"all" => [
"1664236800" => 0,
"1664323200" => 0,
"1664409600" => 0,
"1664496000" => 0,
],
"active" => [
"1664236800" => 0,
"1664323200" => 0,
"1664409600" => 0,
"1664496000" => 0,
],
],
"1664582400" => [ // 1st October
"all" => [
"1664582400" => 0,
"1664668800" => 0,
"1664755200" => 0,
"1664841600" => 0,
"1664928000" => 0,
"1665014400" => 0,
"1665100800" => 0,
"1665187200" => 0,
"1665273600" => 0,
"1665360000" => 0,
"1665446400" => 0,
"1665532800" => 0,
"1665619200" => 0,
"1665705600" => 0,
"1665792000" => 0,
"1665878400" => 0,
"1665964800" => 0,
"1666051200" => 0,
"1666137600" => 0,
"1666224000" => 0,
"1666310400" => 0,
"1666396800" => 0,
"1666483200" => 0,
"1666569600" => 0,
"1666656000" => 0,
"1666742400" => 0,
"1666828800" => 0,
"1666915200" => 0,
"1667001600" => 0,
"1667088000" => 0,
"1667174400" => 0,
],
"active" => [
"1664582400" => 0,
"1664668800" => 0,
"1664755200" => 0,
"1664841600" => 0,
"1664928000" => 0,
"1665014400" => 0,
"1665100800" => 0,
"1665187200" => 0,
"1665273600" => 0,
"1665360000" => 0,
"1665446400" => 0,
"1665532800" => 0,
"1665619200" => 0,
"1665705600" => 0,
"1665792000" => 0,
"1665878400" => 0,
"1665964800" => 0,
"1666051200" => 0,
"1666137600" => 0,
"1666224000" => 0,
"1666310400" => 0,
"1666396800" => 0,
"1666483200" => 0,
"1666569600" => 0,
"1666656000" => 0,
"1666742400" => 0,
"1666828800" => 0,
"1666915200" => 0,
"1667001600" => 0,
"1667088000" => 0,
"1667174400" => 0,
],
],
"1667260800" => [ // 1st November
"all" => [
"1667260800" => 0,
"1667347200" => 0,
"1667433600" => 0,
"1667520000" => 0,
"1667606400" => 0,
"1667692800" => 0,
"1667779200" => 0,
"1667865600" => 0,
"1667952000" => 0,
"1668038400" => 0,
"1668124800" => 0,
"1668211200" => 0,
"1668297600" => 0,
"1668384000" => 0,
"1668470400" => 0,
"1668556800" => 0,
"1668643200" => 0,
"1668729600" => 0,
"1668816000" => 0,
"1668902400" => 0,
"1668988800" => 0,
"1669075200" => 0,
"1669161600" => 0,
"1669248000" => 0,
"1669334400" => 0,
"1669420800" => 0,
"1669507200" => 0,
"1669593600" => 0,
"1669680000" => 0,
"1669766400" => 0,
],
"active" => [
"1667260800" => 0,
"1667347200" => 0,
"1667433600" => 0,
"1667520000" => 0,
"1667606400" => 0,
"1667692800" => 0,
"1667779200" => 0,
"1667865600" => 0,
"1667952000" => 0,
"1668038400" => 0,
"1668124800" => 0,
"1668211200" => 0,
"1668297600" => 0,
"1668384000" => 0,
"1668470400" => 0,
"1668556800" => 0,
"1668643200" => 0,
"1668729600" => 0,
"1668816000" => 0,
"1668902400" => 0,
"1668988800" => 0,
"1669075200" => 0,
"1669161600" => 0,
"1669248000" => 0,
"1669334400" => 0,
"1669420800" => 0,
"1669507200" => 0,
"1669593600" => 0,
"1669680000" => 0,
"1669766400" => 0,
],
],
"1669852800" => [ // 1st December
"all" => [
"1669852800" => 0,
"1669939200" => 0,
"1670025600" => 0,
"1670112000" => 0,
"1670198400" => 0,
"1670284800" => 0,
"1670371200" => 0,
"1670457600" => 0,
"1670544000" => 0,
"1670630400" => 0,
"1670716800" => 0,
"1670803200" => 0,
"1670889600" => 0,
"1670976000" => 0,
"1671062400" => 0,
"1671148800" => 0,
"1671235200" => 0,
"1671321600" => 0,
"1671408000" => 0,
"1671494400" => 0,
"1671580800" => 0,
"1671667200" => 0,
"1671753600" => 0,
"1671840000" => 0,
"1671926400" => 0,
"1672012800" => 0,
"1672099200" => 0,
"1672185600" => 0,
"1672272000" => 0,
],
"active" => [
"1669852800" => 0,
"1669939200" => 0,
"1670025600" => 0,
"1670112000" => 0,
"1670198400" => 0,
"1670284800" => 0,
"1670371200" => 0,
"1670457600" => 0,
"1670544000" => 0,
"1670630400" => 0,
"1670716800" => 0,
"1670803200" => 0,
"1670889600" => 0,
"1670976000" => 0,
"1671062400" => 0,
"1671148800" => 0,
"1671235200" => 0,
"1671321600" => 0,
"1671408000" => 0,
"1671494400" => 0,
"1671580800" => 0,
"1671667200" => 0,
"1671753600" => 0,
"1671840000" => 0,
"1671926400" => 0,
"1672012800" => 0,
"1672099200" => 0,
"1672185600" => 0,
"1672272000" => 0,
],
]
];
Which is the best way I can do this?
My way is to convert each timestamp in date("Y-d", $timestamp) and group by response. (don't know how effective is)

The simplest approach is to loop over your original array, and compute the correct monthly slot for each timestamp :
$result = array();
foreach($arr as $type => $items)
{
foreach($items as $timestamp => $value)
{
// compute first day of month
$d = new DateTime();
$d->setTimestamp(intval($timestamp)); // load timestamp into a DateTime object
$d->setTimeZone(new DateTimeZone('UTC'));
$d->setTime(0, 0, 0); // remove hours, minutes and seconds parts (if needed)
$d->modify('first day of this month');
$firstMonthTimestamp = strval($d->getTimestamp());
// create result array structure the first time
if(!array_key_exists($firstMonthTimestamp, $result)) $result[$firstMonthTimestamp] = array();
if(!array_key_exists($type, $result[$firstMonthTimestamp])) $result[$firstMonthTimestamp][$type] = array();
// append element to the month list
$result[$firstMonthTimestamp][$type][$timestamp] = $value ;
}
}
print_r($result);

As often happens, after you ask a question an answer pops into your head.
The above solution is good, but I need to be able to group this data by hours, days, weeks, months and years
This is my solution after several days of reflection.
$groupData = (new Grouper())->group(new GroupByMonth(), $arr);
Grouper.php
class Grouper
{
public function group(GrouperInterface $service, $data)
{
$dataSources = array_keys($data);
$timestamps = array_keys($data[$dataSources[0]]);
$groupData = [];
$lastKey = null;
foreach ($timestamps as $timestamp) {
if ($service->isNewGroup($timestamp)) {
$groupData[$timestamp] = array_fill_keys($dataSources, []);
$lastKey = $timestamp;
}
foreach ($dataSources as $ds) {
$groupData[$lastKey][$ds][$timestamp] = $data[$ds][$timestamp];
}
}
return $groupData;
}
}
GroupByMonth.php
class GroupByMonth implements GrouperInterface
{
private int $endTimestamp = -1;
public function isNewGroup(int $timestamp): bool
{
if ($this->endTimestamp >= $timestamp) {
return false;
}
$this->endTimestamp = $this->calculateEndTimestamp($timestamp);
return true;
}
private function calculateEndTimestamp(int $timestamp): int
{
list($year, $month) = explode('-', date('Y-n', $timestamp));
$daysInMonth = cal_days_in_month(CAL_GREGORIAN, $month, $year);
$date = \DateTime::createFromFormat("Y-n-d H:i:s", "{$year}-{$month}-{$daysInMonth} 23:59:59");
return $date->getTimestamp();
}
}
This is a better solution for me because it allows me to write more grouping functionality

Last characters trimmed in codeigniter captcha when image default width decreased

I am using codeIgniter 3.1.11.
Default width of captcha image is 150 that contains all the words inside the captcha image.
But when I changed the img_width to 50 according to my need, it is trimming last characters.
Code is as follows:
$vals = array(
'word' => '',
'img_path' => './assets/captcha/',
'img_url' => base_url().'assets/captcha/',
'font_path' => base_url().'assets/fonts/FontAwesome.ttf',
'img_width' => 50, // Default is 150 & less than 150 crops last characters
'img_height' => 30,
'expiration' => 7200,
'word_length' => 4,
'font_size' => 100,
'img_id' => 'cap_img',
'pool' => 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ',
// White background and border, black text and red grid
'colors' => array(
'background' => array(255, 255, 255),
'border' => array(255, 255, 255),
'text' => array(0, 0, 0),
'grid' => array(255, 40, 40)
)
);
$cap = create_captcha($vals);
$data = array(
'captcha_time' => $cap['time'],
'ip_address' => $this->input->ip_address(),
'word' => $cap['word']
);
echo $cap['image'];
This is output image

Simple...
You have to do one thing
Go to Captcha_helper.php and search
instead of
$x = mt_rand(0, $img_width / ($length / 3));
Do Like this
$x = mt_rand(0, $img_width / ($length / 1));

Assign an array in an array variable in PHP

I want to assign an array as an value of another variable in PHP. First array is
<?php
$jsonData = array(
'EndUserIp' => $ipAddress,
'TokenId' => 'a58c1052-c08f-4f40-9a9c-8841de585a14',
'AdultCount' => 1,
'ChildCount' => 0,
'InfantCount' => 0,
'DirectFlight' => 1,
'OneStopFlight' => 0,
'JourneyType' => 1,
'Segments'
);
?>
The second array is:
<?php
$segmentVal = array(
'Origin' => 'DEL',
'Destination' => 'CCU',
'FlightCabinClass' => 2,
'PreferredDepartureTime' => '2017-10-13T00:00:00',
'PreferredArrivalTime' => '2017-10-13T00:00:00'
);
?>
I want to assign the second array as the value of Segment variable in the first array.

try $jsonData['Segments'] = $segmentVal;

Following way to do array combine.
1)
<?php
$segmentVal = array(
'Origin' => 'DEL',
'Destination' => 'CCU',
'FlightCabinClass' => 2,
'PreferredDepartureTime' => '2017-10-13T00:00:00',
'PreferredArrivalTime' => '2017-10-13T00:00:00'
);
$jsonData = array(
'EndUserIp' => $ipAddress,
'TokenId' => 'a58c1052-c08f-4f40-9a9c-8841de585a14',
'AdultCount' => 1,
'ChildCount' => 0,
'InfantCount' => 0,
'DirectFlight' => 1,
'OneStopFlight' => 0,
'JourneyType' => 1,
'Segments' => $segmentVal
);
?>
2)
<?php
$jsonData = array(
'EndUserIp' => $ipAddress,
'TokenId' => 'a58c1052-c08f-4f40-9a9c-8841de585a14',
'AdultCount' => 1,
'ChildCount' => 0,
'InfantCount' => 0,
'DirectFlight' => 1,
'OneStopFlight' => 0,
'JourneyType' => 1,
'Segments' => array(
'Origin' => 'DEL',
'Destination' => 'CCU',
'FlightCabinClass' => 2,
'PreferredDepartureTime' => '2017-10-13T00:00:00',
'PreferredArrivalTime' => '2017-10-13T00:00:00'
)
);
?>

I came up with two possible ways to do so
First one is passing encoding the second array with json as below
$jsonData = array(
'EndUserIp' => "192.168.0.10",
'TokenId' => 'a58c1052-c08f-4f40-9a9c-8841de585a14',
'AdultCount' => 1,
'ChildCount' => 0,
'InfantCount' => 0,
'DirectFlight' => 1,
'OneStopFlight' => 0,
'JourneyType' => 1,
'Segments' => json_encode($segmentVal),
);
The second one is similar
You can serialize the $segmentVal as below
$jsonData = array(
'EndUserIp' => "192.168.0.10",
'TokenId' => 'a58c1052-c08f-4f40-9a9c-8841de585a14',
'AdultCount' => 1,
'ChildCount' => 0,
'InfantCount' => 0,
'DirectFlight' => 1,
'OneStopFlight' => 0,
'JourneyType' => 1,
'Segments' => serialize($segmentVal),
);

how do I copy a lot of images onto a canvas in PHP?

I have witten a function that copies some images onto a canvas and saves it to a file. My code is at the bottom of the post.
The code works fine when i try to copy 15 image onto the canvas, but when i try to copy 30 it just stops. No errors or exceptions...
I hope one of you can help me out :)
$img = imagecreatefromjpeg( $image );
$imgWidth = imagesx($img);
$imgHeight = imagesy($img);
// CREATE CANVAS AND FILL WITH WHITE
$canvas = imagecreatetruecolor( $guidelines['canvasW'] * $dpi, $guidelines['canvasH'] * $dpi );
$color = imagecolorallocate( $canvas, 255, 255, 255 );
imagefill( $canvas, 0, 0, $color );
// COPY THE IMAGES ONTO THE CANVAS
foreach( $guidelines['imageGuide'] as $guide ):
$bestFit = bestFit( $imgWidth, $imgHeight, $guide['W'] * $dpi, $guide['H'] * $dpi );
if( $bestFit['rotate'] ) {
$output = imagerotate($img, 90, 0);
} else {
$output = imagerotate($img, 0, 0);
}
imagecopyresampled($canvas, $output, $guide['X'] * $dpi, $guide['Y'] * $dpi, 0, 0, $bestFit['x'], $bestFit['y'], imagesx($output), imagesy($output));
imagedestroy($output);
endforeach;
$guidelines is an array. Here is an example which will copy 16 images onto the canvas
$guidelines = array( 'canvasW' => 20,
'canvasH' => 30,
'imageGuide' => array(
array('W' => 18, 'H' => 13, 'X' => 1, 'Y' => 1.5),
array('W' => 3.5, 'H' => 4.5, 'X' => 1.25, 'Y' => 15),
array('W' => 3.5, 'H' => 4.5, 'X' => 4.75, 'Y' => 15),
array('W' => 3.5, 'H' => 4.5, 'X' => 8.25, 'Y' => 15),
array('W' => 3.5, 'H' => 4.5, 'X' => 11.75, 'Y' => 15),
array('W' => 3.5, 'H' => 4.5, 'X' => 15.25, 'Y' => 15),
array('W' => 3.5, 'H' => 4.5, 'X' => 1.25, 'Y' => 19.5),
array('W' => 3.5, 'H' => 4.5, 'X' => 4.75, 'Y' => 19.5),
array('W' => 3.5, 'H' => 4.5, 'X' => 8.25, 'Y' => 19.5),
array('W' => 3.5, 'H' => 4.5, 'X' => 11.75, 'Y' => 19.5),
array('W' => 3.5, 'H' => 4.5, 'X' => 15.25, 'Y' => 19.5),
array('W' => 3.5, 'H' => 4.5, 'X' => 1.25, 'Y' => 24),
array('W' => 3.5, 'H' => 4.5, 'X' => 4.75, 'Y' => 24),
array('W' => 3.5, 'H' => 4.5, 'X' => 8.25, 'Y' => 24),
array('W' => 3.5, 'H' => 4.5, 'X' => 11.75, 'Y' => 24),
array('W' => 3.5, 'H' => 4.5, 'X' => 15.25, 'Y' => 24),
),
);

I'm going to guess that you are using too much RAM with this job. ImageCopyResampled has to write a lot to RAM with this job you have, and images can take up a lot of memory. Check memory_limit in your php.ini file, try increasing it and see if you can get through more/all of your images being written to the canvas. Good luck!

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