32 lines
847 B
PHP
32 lines
847 B
PHP
<?php
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$letters = 'ABCDEFGKIJKLMNPQRSTUVWXYZ23456789';
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$caplen = 4;
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$width = 120; $height = 20;
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$font = './../assets/fonts/comic.ttf';
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$fontsize = 14;
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header('Content-type: image/png');
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$im = imagecreatetruecolor($width, $height);
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imagesavealpha($im, true);
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$bg = imagecolorallocatealpha($im, 0, 0, 0, 127);
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imagefill($im, 0, 0, $bg);
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$captcha = '';
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for ($i = 0; $i < $caplen; $i++) {
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$captcha .= $letters[ rand(0, strlen($letters)-1) ];
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$x = ($width - 20) / $caplen * $i + 10;
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$x = rand($x, $x+4);
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$y = $height - ( ($height - $fontsize) / 2 );
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$curcolor = imagecolorallocate( $im, rand(0, 100), rand(0, 100), rand(0, 100) );
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$angle = rand(-25, 25);
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imagettftext($im, $fontsize, $angle, $x, $y, $curcolor, $font, $captcha[$i]);
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}
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session_start();
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$_SESSION['captcha'] = $captcha;
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imagepng($im);
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imagedestroy($im); |