Replace the last rand() with mt_rand()
Better entropy, faster.
Also fixed a few "it's" typos.
diff --git a/system/helpers/captcha_helper.php b/system/helpers/captcha_helper.php
index 29911dc..ea46f97 100644
--- a/system/helpers/captcha_helper.php
+++ b/system/helpers/captcha_helper.php
@@ -126,9 +126,9 @@
// Determine angle and position
// -----------------------------------
$length = strlen($word);
- $angle = ($length >= 6) ? rand(-($length-6), ($length-6)) : 0;
- $x_axis = rand(6, (360/$length)-16);
- $y_axis = ($angle >= 0) ? rand($img_height, $img_width) : rand(6, $img_height);
+ $angle = ($length >= 6) ? mt_rand(-($length-6), ($length-6)) : 0;
+ $x_axis = mt_rand(6, (360/$length)-16);
+ $y_axis = ($angle >= 0) ? mt_rand($img_height, $img_width) : mt_rand(6, $img_height);
// Create image
// PHP.net recommends imagecreatetruecolor(), but it isn't always available
@@ -183,13 +183,13 @@
if ($use_font === FALSE)
{
$font_size = 5;
- $x = rand(0, $img_width / ($length / 3));
+ $x = mt_rand(0, $img_width / ($length / 3));
$y = 0;
}
else
{
$font_size = 16;
- $x = rand(0, $img_width / ($length / 1.5));
+ $x = mt_rand(0, $img_width / ($length / 1.5));
$y = $font_size + 2;
}
@@ -197,13 +197,13 @@
{
if ($use_font === FALSE)
{
- $y = rand(0 , $img_height / 2);
+ $y = mt_rand(0 , $img_height / 2);
imagestring($im, $font_size, $x, $y, $word[$i], $colors['text']);
$x += ($font_size * 2);
}
else
{
- $y = rand($img_height / 2, $img_height - 3);
+ $y = mt_rand($img_height / 2, $img_height - 3);
imagettftext($im, $font_size, $angle, $x, $y, $colors['text'], $font_path, $word[$i]);
$x += $font_size;
}