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Antworten: 11

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Caps

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Beiträge: 59

# Thema - 20.06.2011 um 07:04 Uhr

For those who can not easily read the security code, is there a way to increase the security code's font size? If so, where?

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hajo

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# Antwort: 1 - 20.06.2011 um 07:24 Uhr

you can change the function in system/core/gd.php named "captcha" to have the captcha in another size / color / etc.

there is no option inside the cms to change it by configuration, sorry.

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Caps
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# Antwort: 2 - 20.06.2011 um 08:50 Uhr

May I ask if you can give me the code and line number to increase font size - at your convenience.

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hajo

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# Antwort: 3 - 20.06.2011 um 08:56 Uhr

line 32 beginning with imagestring

changes to that line may need an altered image size, too

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Caps
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# Antwort: 4 - 20.06.2011 um 16:41 Uhr

If the characters are too large they go off the box. The box or container also needs to increase in h/w. When a character has similar color as the background, the image is difficult to detect. This is the feedback I am receiving. Increasing the h/w would solve this.

Zuletzt editiert von Caps am 20.06.2011 um 17:02 Uhr (3x Editiert)

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Jam2

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# Antwort: 5 - 20.06.2011 um 16:41 Uhr

jjj?^^

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Edi: könnte man denn auch hier eine erweiterung einfügen?
Jam2: das web ist wie toyota.....

Edi: hö ?
Jam2: nichts ist unmöglich!

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hajo

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# Antwort: 6 - 20.06.2011 um 17:09 Uhr

as i said before:

changes to that line may need an altered image size, too

the image size is calculated above and adds a few pixels per char to the width, height is a static value as far as i remember it

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Caps
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# Antwort: 7 - 20.06.2011 um 19:46 Uhr

Was not able to increase the security box. Please assist in making the overall container larger.

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  $gd_info = gd_info();
  $chars = strlen($hash);
  $height = $chars == 3 ? 18 : 40;
  $charsize = $chars * 20;
  $img = ImageCreateTrueColor($charsize,$height);
  $bgc = ImageColorAllocate($img,rand(0,80),rand(0,80),rand(0,80));
  ImageFill($img,0,0,$bgc);

  for($i=1;$i<$chars;$i++) {
    $linecolor = ImageColorAllocate($img,rand(0,150),rand(0,150),rand(0,150));
    ImageLine($img, $i * 20, 0, $i * 20, $height, $linecolor);
  }
  $linecolor = ImageColorAllocate($img,rand(0,150),rand(0,150),rand(0,150));
  ImageLine($img, 0, $height / 3, $charsize, $height / 3, $linecolor);
  $linecolor = ImageColorAllocate($img,rand(0,150),rand(0,150),rand(0,150));
  ImageLine($img, 0, $height / 3 * 2, $charsize, $height / 3 * 2, $linecolor);

  $linecolor = ImageColorAllocate($img,0,0,0);
  ImageLine($img, 0, 0, $charsize, 0, $linecolor);
  ImageLine($img, 0, $height - 1, $charsize, $height - 1, $linecolor);
  ImageLine($img, 0, 0, 0, $height - 1, $linecolor);
  ImageLine($img, $charsize - 8, 0, $charsize - 5, $height - 5, $linecolor);

  for($i=0;$i<$chars;$i++) {
    $textcolor = ImageColorAllocate($img,rand(100,250),rand(100,250),rand(100,250));
    ImageString($img,rand(3,5),rand(($i * 20 + 2),($i * 20 + 8)),rand(90,$height - 40),$hash{$i},$textcolor);
  }

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hajo

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# Antwort: 8 - 20.06.2011 um 20:42 Uhr

$img = ImageCreateTrueColor($charsize,$height); on line 7 of your pasted code

$height contains the overall height (defined in line 5 for normal and 3-digit captcha code) whilst $charsize is defined on a per char basis on line 6.

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Caps
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# Antwort: 9 - 22.06.2011 um 00:51 Uhr

Sorry I messed it up. There has to be a better way. I would rather have a calculated field then Captcha any day. Unless it is literally given to me, I will distroy it.

Zuletzt editiert von Caps am 22.06.2011 um 00:53 Uhr (1x Editiert)

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flyingdevil

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# Antwort: 10 - 01.06.2012 um 19:02 Uhr

Kann das hier mal bitte nochmal auf Deutsch erklären

.?
Ich würde die anzahl der Zeichen und das BG-Bild auch gerne ändern.

mfg

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Blu3ye

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# Antwort: 11 - 02.01.2013 um 15:37 Uhr

I would like to change the font to a better readable where i doent look the same like l
Not that easy changeable?

Grrr.... found explanation of imagestring here http://php.net/manual/de/function.imagestring.php

So changing second value SHOULD change the font... but I don´t get it

ImageString($img,rand(3,5),5 + rand(($i * 20 + 2),($i * 20 + 8)),rand(2,$height - 20),$hash{$i},$textcolor);

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