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  1. <?php
  2. 	# ------- The graph values in the form of associative array
  3. 	$values=array(
  4. 		"Jan" => 110,
  5. 		"Feb" => 130,
  6. 		"Mar" => 215,
  7. 		"Apr" => 81,
  8. 		"May" => 310,
  9. 		"Jun" => 110,
  10. 		"Jul" => 190,
  11. 		"Aug" => 175,
  12. 		"Sep" => 390,
  13. 		"Oct" => 286,
  14. 		"Nov" => 150,
  15. 		"Dec" => 196
  16. 	);
  17.  
  18.  
  19. 	$img_width=450;
  20. 	$img_height=300; 
  21. 	$margins=20;
  22.  
  23.  
  24. 	# ---- Find the size of graph by substracting the size of borders
  25. 	$graph_width=$img_width - $margins * 2;
  26. 	$graph_height=$img_height - $margins * 2; 
  27. 	$img=imagecreate($img_width,$img_height);
  28.  
  29.  
  30. 	$bar_width=20;
  31. 	$total_bars=count($values);
  32. 	$gap= ($graph_width- $total_bars * $bar_width ) / ($total_bars +1);
  33.  
  34.  
  35. 	# -------  Define Colors ----------------
  36. 	$bar_color=imagecolorallocate($img,0,64,128);
  37. 	$background_color=imagecolorallocate($img,240,240,255);
  38. 	$border_color=imagecolorallocate($img,200,200,200);
  39. 	$line_color=imagecolorallocate($img,220,220,220);
  40.  
  41. 	# ------ Create the border around the graph ------
  42.  
  43. 	imagefilledrectangle($img,1,1,$img_width-2,$img_height-2,$border_color);
  44. 	imagefilledrectangle($img,$margins,$margins,$img_width-1-$margins,$img_height-1-$margins,$background_color);
  45.  
  46.  
  47. 	# ------- Max value is required to adjust the scale	-------
  48. 	$max_value=max($values);
  49. 	$ratio= $graph_height/$max_value;
  50.  
  51.  
  52. 	# -------- Create scale and draw horizontal lines  --------
  53. 	$horizontal_lines=20;
  54. 	$horizontal_gap=$graph_height/$horizontal_lines;
  55.  
  56. 	for($i=1;$i<=$horizontal_lines;$i++){
  57. 		$y=$img_height - $margins - $horizontal_gap * $i ;
  58. 		imageline($img,$margins,$y,$img_width-$margins,$y,$line_color);
  59. 		$v=intval($horizontal_gap * $i /$ratio);
  60. 		imagestring($img,0,5,$y-5,$v,$bar_color);
  61.  
  62. 	}
  63.  
  64.  
  65. 	# ----------- Draw the bars here ------
  66. 	for($i=0;$i< $total_bars; $i++){ 
  67. 		# ------ Extract key and value pair from the current pointer position
  68. 		list($key,$value)=each($values); 
  69. 		$x1= $margins + $gap + $i * ($gap+$bar_width) ;
  70. 		$x2= $x1 + $bar_width; 
  71. 		$y1=$margins +$graph_height- intval($value * $ratio) ;
  72. 		$y2=$img_height-$margins;
  73. 		imagestring($img,0,$x1+3,$y1-10,$value,$bar_color);
  74. 		imagestring($img,0,$x1+3,$img_height-15,$key,$bar_color);		
  75. 		imagefilledrectangle($img,$x1,$y1,$x2,$y2,$bar_color);
  76. 	}
  77. 	header("Content-type:image/png");
  78. 	imagepng($img);
  79.  
  80. ?>
Runtime error #stdin #stdout 0.02s 13112KB
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Standard input is empty
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Fatal error: Call to undefined function imagecreate() in /home/N5GIxw/prog.php on line 27
https://ideone.com/w8UCg
language:
PHP (php 7.3.5)
created:
14 years ago
visibility:
public

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