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265 lines
14 KiB
PHP
265 lines
14 KiB
PHP
<?php
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/**
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU AFFERO GENERAL PUBLIC LICENSE
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* along with this program; if not, see http://www.gnu.org/licenses
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* or write to the Free Software Foundation,Inc., 51 Franklin Street,
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* Fifth Floor, Boston, MA 02110-1301 USA
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* @Package Gantt chart
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* @copyright Andrew Mclaughlan 2014
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* @author Andrew Mclaughlan <andrew@mclaughlan.info>
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*/
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#[\AllowDynamicProperties]
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class Gantt
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{
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private $start_date;
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private $end_date;
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private $tasks;
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public function __construct($start_date, $end_date, $tasks)
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{
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$this->start_date = $start_date;
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$this->end_date = $end_date;
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$this->tasks = $tasks;
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//draw the grid
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$this->draw($this->start_date, $this->end_date, $this->tasks);
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}
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public function draw($start_date, $end_date, $tasks)
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{
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$time_span = $this->year_month($start_date, $end_date);
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$day_count = $this->count_days($start_date, $end_date);
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// $project_length = $this->time_range($start_date, $end_date);
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//Generate main table and the first row containing the months
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echo '<table class="main_table"><tr class="month_row">';
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foreach ($time_span as $months) {
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foreach ($months as $month => $days) {
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echo '<td class="months">'. ' ' .'</td>'; //$month
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}
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}
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//end the month row and start the days row
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echo '</tr><tr class="day_row">';
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$month_count = 0;//start month count
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foreach ($time_span as $months) {
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$m=0;
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$day_num = 0;
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foreach ($months as $days) {
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echo '<td class="inner_container">';
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//Generate a table containing the days in each month
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echo '<table class="table_inner"><tr>';
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foreach ($days as $day => $d) {
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echo '<td class="inner_td"><div class="cell_width">'.' '.'</div></td>';//day number shown $day
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}
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echo '</tr><tr>';
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foreach ($days as $d) {
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$day_num ++;
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echo '<td class="inner_td"><div class="cell_width">'.$day_num.'</div></td>';//First letter of the days name shown //$this->substr_unicode($d,0,1)
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}
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echo '</tr></table></td>';//end table containing the days in each month
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$m++;
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}
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$month_count += $m; //total month count
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}
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//for each task generate a row of empty days
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$i=1;
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if (!is_null($tasks)) {
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foreach ($tasks as $task) {
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echo '</tr><tr class="task_row">';
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echo '<td colspan="'.$month_count.'"><table id="task'.$i.'" class="table_inner"><tr>';
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$task_start_day = $this->count_days($start_date, $task->date_start);
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$task_end_day = $this->count_days($start_date, $task->date_finish);
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$task_duration = $this->count_days($task->date_start, $task->date_finish);
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$task->predecessors = $task->predecessors == '' ? 0 : $task->predecessors;
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for ($x=1; $x<= $day_count; $x++) {
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if ($x==1 && $x != $task_start_day) {
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echo '<td class="inner_td"><div class="cell_width day_block"></div></td>';
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} else {
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if ($x==1 && $x == $task_start_day) {
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if ($task->milestone_flag == '1' && ($task_duration == 0 || $task_duration == 1)) {
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echo '<td class="task_td2"><div class="cell_width task_block1">
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<div class="task_block_inner">
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<div class="milestone link" id="'.$task->id.'" pre="'.$task->predecessors.'" link="'.$task->relationship_type.'" rel="'.$task->name.'">
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<img src="modules/Project/images/add_milestone.png" />
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</div>
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</div>
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</div></td><td class="inner_td"><div class="cell_width day_block"></div></td>';
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} else {
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if ($task_duration == 0 || $task_duration == 1) {
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echo '<td class="task_td2"><div class="cell_width task_block1">
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<div class="task_block_inner">
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<div class="task1 link" id="'.$task->id.'" pre="'.$task->predecessors.'" link="'.$task->relationship_type.'" rel="'.$task->name.'">
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<div class="task_percent" rel="'.$task->percent_complete.'"></div>
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</div>
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</div>
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</div></td><td class="inner_td"><div class="cell_width day_block"></div></td>';
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} else {
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echo '<td class="task_td" colspan="'.$task_duration.'"><div class="cell_width task_block">
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<div class="task_block_inner">
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<div class="task link" id="'.$task->id.'" pre="'.$task->predecessors.'" link="'.$task->relationship_type.'" rel="'.$task->name.'">
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<div class="task_percent" rel="'.$task->percent_complete.'">'.$task->name.'</div>
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</div>
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</div>
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</div></td>';
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}
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}
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} else {
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if ($x == $task_start_day && $x == $day_count) {
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if ($task->milestone_flag == '1' && ($task_duration == 0 || $task_duration == 1)) {
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echo '<td class="task_td2"><div class="cell_width task_block1">
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<div class="task_block_inner">
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<div class="milestone link" id="'.$task->project_task_id.'" pre="'.$task->predecessors.'" link="'.$task->relationship_type.'" rel="'.$task->name.'">
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<img src="modules/Project/images/add_milestone.png" />
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</div>
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</div>
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</div></td>';
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} else {
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if ($task_duration == 0 || $task_duration == 1) {
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echo '<td class="task_td2"><div class="cell_width task_block1">
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<div class="task_block_inner">
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<div class="task1 link" id="'.$task->project_task_id.'" pre="'.$task->predecessors.'" link="'.$task->relationship_type.'" rel="'.$task->name.'">
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<div class="task_percent" rel="'.$task->percent_complete.'"></div>
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</div>
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</div>
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</div></td>';
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} else {
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echo '<td class="task_td" colspan="'.$task_duration.'"><div class="cell_width task_block">
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<div class="task_block_inner">
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<div class="task link" id="'.$task->project_task_id.'" pre="'.$task->predecessors.'" link="'.$task->relationship_type.'" rel="'.$task->name.'">
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<div class="task_percent" rel="'.$task->percent_complete.'">'.$task->name.'</div>
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</div>
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</div>
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</div></td>';
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}
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}
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} else {
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if ($x == $task_start_day) {
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if ($task->milestone_flag == '1' && ($task_duration == 0 || $task_duration == 1)) {
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echo '<td class="task_td2"><div class="cell_width task_block1">
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<div class="task_block_inner">
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<div class="milestone link" id="'.$task->project_task_id.'" pre="'.$task->predecessors.'" link="'.$task->relationship_type.'" rel="'.$task->name.'">
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<img src="modules/Project/images/add_milestone.png" />
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</div>
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</div>
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</div></td><td class="inner_td"><div class="cell_width day_block"></div></td>';
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} else {
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if ($task_duration == 0 || $task_duration == 1) {
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echo '<td class="task_td2"><div class="cell_width task_block1">
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<div class="task_block_inner">
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<div class="task1 link" id="'.$task->project_task_id.'" pre="'.$task->predecessors.'" link="'.$task->relationship_type.'" rel="'.$task->name.'">
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<div class="task_percent" rel="'.$task->percent_complete.'"></div>
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</div>
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</div>
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</div></td><td class="inner_td"><div class="cell_width day_block"></div></td>';
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} else {
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echo '<td class="task_td" colspan="'.$task_duration.'"><div class="cell_width task_block">
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<div class="task_block_inner">
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<div class="task link" id="'.$task->project_task_id.'" pre="'.$task->predecessors.'" link="'.$task->relationship_type.'" rel="'.$task->name.'">
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<div class="task_percent" rel="'.$task->percent_complete.'"></div>
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</div>
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</div>
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</div></td>';
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}
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}
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} else {
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if ($x == $day_count) {
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} else {
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if ($x > $task_start_day && $x < $task_end_day) {
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//leave blank
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} else {
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echo '<td class="inner_td"><div class="cell_width day_block"></div></td>';
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}
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}
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}
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}
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}
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}
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}
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echo '</tr></table ></td></tr>';
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$i++;
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}
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}
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echo '</table>';
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}
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//Returns an array containing the years, months and days between two dates
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public function year_month($start_date, $end_date)
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{
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$begin = new DateTime($start_date);
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$end = new DateTime($end_date);
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$end->add(new DateInterval('P1D')); //Add 1 day to include the end date as a day
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$interval = new DateInterval('P1D'); // 1 month interval
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$period = new DatePeriod($begin, $interval, $end);
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$aResult = array();
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foreach ($period as $dt) {
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$aResult[$dt->format('Y')][strftime("%B", $dt->getTimestamp())][$dt->format('j')] = strftime("%a", $dt->getTimestamp());
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}
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return $aResult;
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}
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//Returns the total number of days between two dates
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public function count_days($start_date, $end_date)
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{
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$d1 = new DateTime($start_date);
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$d2 = new DateTime($end_date);
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//If the task's end date is before chart's start date return 1 to make sure task starts on first day of the chart
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if ($d2 < $d1) {
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return 1;
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}
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$d2->add(new DateInterval('P1D')); //Add 1 day to include the end date as a day
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$difference = $d1->diff($d2);
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return $difference->days;
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}
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//Returns the time span between two dates in years months and days
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public function time_range($start_date, $end_date)
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{
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$datetime1 = new DateTime($start_date);
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$datetime2 = new DateTime($end_date);
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$datetime2->add(new DateInterval('P1D')); //Add 1 day to include the end date as a day
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$interval = $datetime1->diff($datetime2);
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return $interval->format('%y years %m months and %d days');
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}
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public function substr_unicode($str, $s, $l = null)
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{
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return implode("", array_slice(
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preg_split("//u", (string) $str, -1, PREG_SPLIT_NO_EMPTY),
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$s,
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$l
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));
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}
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// Function for basic field validation (present and neither empty nor only white space
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public function IsNullOrEmptyString($question)
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{
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return (!isset($question) || trim($question)==='');
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}
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}
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