Edit file File name : gantt.php Content :<?php /** * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE as published by * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU AFFERO GENERAL PUBLIC LICENSE * along with this program; if not, see http://www.gnu.org/licenses * or write to the Free Software Foundation,Inc., 51 Franklin Street, * Fifth Floor, Boston, MA 02110-1301 USA * @Package Gantt chart * @copyright Andrew Mclaughlan 2014 * @author Andrew Mclaughlan <andrew@mclaughlan.info> */ class Gantt { private $start_date; private $end_date; private $tasks; public function __construct($start_date, $end_date, $tasks) { $this->start_date = $start_date; $this->end_date = $end_date; $this->tasks = $tasks; //draw the grid $this->draw($this->start_date, $this->end_date, $this->tasks); } public function draw($start_date, $end_date, $tasks){ $day_count = $this->count_days($start_date, $end_date); $diff_interval = 30 - $day_count; if( $diff_interval <= 0 ) $time_span = $this->year_month($start_date, $end_date); else $time_span = $this->year_month($start_date, $end_date, $diff_interval); // $project_length = $this->time_range($start_date, $end_date); //Generate main table and the first row containing the months echo '<table class="main_table"><tr class="month_row">'; foreach($time_span as $months) { foreach($months as $month => $days){ echo '<td class="months">'.$month.'</td>'; } } //end the month row and start the days row echo '</tr><tr class="day_row">'; $month_count = 0;//start month count foreach($time_span as $months) { $m=0; foreach($months as $days){ echo '<td class="inner_container">'; //Generate a table containing the days in each month echo '<table class="table_inner"><tr>'; foreach($days as $day => $d){ echo '<td class="inner_td"><div class="cell_width">'.$day.'</div></td>';//day number shown } echo '</tr><tr>'; foreach($days as $d){ echo '<td class="inner_td"><div class="cell_width">'.$this->substr_unicode($d,0,1).'</div></td>';//First letter of the days name shown } echo '</tr></table></td>';//end table containing the days in each month $m++; } $month_count += $m; //total month count } //for each task generate a row of empty days $i=1; if(!is_null($tasks)){ foreach($tasks as $task){ echo '</tr><tr class="task_row">'; echo '<td colspan="'.$month_count.'"><table id="task'.$i.'" class="table_inner"><tr>'; $task_start_day = $this->count_days($start_date, $task->date_start); $task_end_day = $this->count_days($start_date, $task->date_finish); $task_duration = $this->count_days($task->date_start, $task->date_finish); $task->predecessors = $task->predecessors == '' ? 0 : $task->predecessors; for ($x=1; $x<= $day_count; $x++) { if($x==1 && $x != $task_start_day){ echo '<td class="inner_td"><div class="cell_width day_block"></div></td>'; } else if($x==1 && $x == $task_start_day){ if($task->milestone_flag == '1' && ($task_duration == 0 || $task_duration == 1)){ echo '<td class="task_td2"><div class="cell_width task_block1"> <div class="task_block_inner"> <div class="milestone link" id="'.$task->project_task_id.'" pre="'.$task->predecessors.'" link="'.$task->relationship_type.'" rel="'.$task->name.'"> <img src="custom/modules/Project/images/add_milestone.png" /> </div> </div> </div></td><td class="inner_td"><div class="cell_width day_block"></div></td>'; } else if($task_duration == 0 || $task_duration == 1){ echo '<td class="task_td2"><div class="cell_width task_block1"> <div class="task_block_inner"> <div class="task1 link" id="'.$task->project_task_id.'" pre="'.$task->predecessors.'" link="'.$task->relationship_type.'" rel="'.$task->name.'"> <div class="task_percent" rel="'.$task->percent_complete.'"></div> </div> </div> </div></td><td class="inner_td"><div class="cell_width day_block"></div></td>'; } else { echo '<td class="task_td" colspan="'.$task_duration.'"><div class="cell_width task_block"> <div class="task_block_inner"> <div class="task link" id="'.$task->project_task_id.'" pre="'.$task->predecessors.'" link="'.$task->relationship_type.'" rel="'.$task->name.'"> <div class="task_percent" rel="'.$task->percent_complete.'">'.$task->name.'</div> </div> </div> </div></td>'; } } else if($x == $task_start_day && $x == $day_count){ if($task->milestone_flag == '1' && ($task_duration == 0 || $task_duration == 1)){ echo '<td class="task_td2"><div class="cell_width task_block1"> <div class="task_block_inner"> <div class="milestone link" id="'.$task->project_task_id.'" pre="'.$task->predecessors.'" link="'.$task->relationship_type.'" rel="'.$task->name.'"> <img src="custom/modules/Project/images/add_milestone.png" /> </div> </div> </div></td>'; } else if($task_duration == 0 || $task_duration == 1){ echo '<td class="task_td2"><div class="cell_width task_block1"> <div class="task_block_inner"> <div class="task1 link" id="'.$task->project_task_id.'" pre="'.$task->predecessors.'" link="'.$task->relationship_type.'" rel="'.$task->name.'"> <div class="task_percent" rel="'.$task->percent_complete.'"></div> </div> </div> </div></td>'; } else { echo '<td class="task_td" colspan="'.$task_duration.'"><div class="cell_width task_block"> <div class="task_block_inner"> <div class="task link" id="'.$task->project_task_id.'" pre="'.$task->predecessors.'" link="'.$task->relationship_type.'" rel="'.$task->name.'"> <div class="task_percent" rel="'.$task->percent_complete.'">'.$task->name.'</div> </div> </div> </div></td>'; } } else if($x == $task_start_day){ if($task->milestone_flag == '1' && ($task_duration == 0 || $task_duration == 1)){ echo '<td class="task_td2"><div class="cell_width task_block1"> <div class="task_block_inner"> <div class="milestone link" id="'.$task->project_task_id.'" pre="'.$task->predecessors.'" link="'.$task->relationship_type.'" rel="'.$task->name.'"> <img src="custom/modules/Project/images/add_milestone.png" /> </div> </div> </div></td><td class="inner_td"><div class="cell_width day_block"></div></td>'; } else if($task_duration == 0 || $task_duration == 1){ echo '<td class="task_td2"><div class="cell_width task_block1"> <div class="task_block_inner"> <div class="task1 link" id="'.$task->project_task_id.'" pre="'.$task->predecessors.'" link="'.$task->relationship_type.'" rel="'.$task->name.'"> <div class="task_percent" rel="'.$task->percent_complete.'"></div> </div> </div> </div></td><td class="inner_td"><div class="cell_width day_block"></div></td>'; } else { echo '<td class="task_td" colspan="'.$task_duration.'"><div class="cell_width task_block"> <div class="task_block_inner"> <div class="task link" id="'.$task->project_task_id.'" pre="'.$task->predecessors.'" link="'.$task->relationship_type.'" rel="'.$task->name.'"> <div class="task_percent" rel="'.$task->percent_complete.'"></div> </div> </div> </div></td>'; } } else if($x == $day_count){ } else if($x > $task_start_day && $x < $task_end_day){ //leave blank } else { echo '<td class="inner_td"><div class="cell_width day_block"></div></td>'; } } echo '</tr></table ></td></tr>'; $i++; } } echo '</table>'; } //Returns an array containing the years, months and days between two dates public function year_month($start_date, $end_date, $diff_interval=1) { $begin = new DateTime( $start_date ); $end = new DateTime( $end_date); $end->add(new DateInterval('P'. $diff_interval .'D')); //Add 1 day to include the end date as a day $interval = new DateInterval('P1D'); // 1 month interval $period = new DatePeriod($begin, $interval, $end); $aResult = array(); foreach ( $period as $dt ) { $aResult[$dt->format('Y')][strftime("%B", $dt->getTimestamp())][$dt->format('j')] = strftime("%a", $dt->getTimestamp()); } return $aResult; } //Returns the total number of days between two dates public function count_days($start_date, $end_date){ $d1 = new DateTime($start_date); $d2 = new DateTime($end_date); //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 if($d2 < $d1){ return 1; } $d2->add(new DateInterval('P1D')); //Add 1 day to include the end date as a day $difference = $d1->diff($d2); return $difference->days; } //Returns the time span between two dates in years months and days public function time_range($start_date, $end_date){ $datetime1 = new DateTime($start_date); $datetime2 = new DateTime($end_date); $datetime2->add(new DateInterval('P1D')); //Add 1 day to include the end date as a day $interval = $datetime1->diff($datetime2); return $interval->format('%y years %m months and %d days'); } public function substr_unicode($str, $s, $l = null) { return join("", array_slice( preg_split("//u", $str, -1, PREG_SPLIT_NO_EMPTY), $s, $l)); } // Function for basic field validation (present and neither empty nor only white space public function IsNullOrEmptyString($question){ return (!isset($question) || trim($question)===''); } }Save