用PHP實作登陸驗證碼(類似條行碼狀)_PHP教程

函數UPCAbarcode($code) {
  $lw = 2; $hi = 100;
  $Lencode = array('0001101','0011001'11' ','0111101','0100011',
                  '0110001','01011111     '011,001','010111111,'011111011,0010,','010111110,'0111111010101170011700117001172017201370370037257300373730337330333333333333333333人>;  $Rencode = array('1110010','1100110' ,'1101100','1000010','1011100',
                   '1001110','1011010' );
  $ends = '101'; $center = '01010';
  /* UPC-A 必須是11 位數，我們計算校驗和。 */
  if ( strlen($code) != 11 ) { die("UPC-A 必須是11 位數字。"); }
  /* 計算EAN-13 校驗和數字*/
  $ncode = '0'.$code;
  $even = 0; $odd = 0;
  for ($x=0;$x    if ($x % 2) { $odd = $ncode[$x]; } else { $even = $ncode[$x]; }
  }
  $code.=(10 - (($odd * 3 $even ) % 10)) % 10;
  /* 使用二進位字串建立條形編碼*/
  $條=$ends;
  $bars.=$Lencode[$code[0]];
  for($x=1;$x    $bars.=$Lencode [$code[$x]];
  }
  $bars.=$center;
  for($x=6;$x    $bars.=$ Rencode[$code[$x]];
  }
  $bars.=$ends ;
  /* 產生條碼影像*/
  $img = ImageCreate($lw*95 30,$你好30);
  $fg = ImageColorAllocate($img, 0, 0, 0);
  $bg = ImageColorAllocate($img, 255, 255, 255);
  ImageFilledRectangle($img, 0, 0, $lw*95 30, $hi 30, $biftg); ;
  for ($x=0;$x if (($x=45 && $x=85)) { $sh=10; } 否則{ $sh=0; }
    if ($bars[$x] == '1') { $color = $fg; } else { $color = $bg; }
    ImageFilledRectangle($img, ($x*$lw) 15,5,($x 1)*$lw 14,$hi 5 $sh,$color);
}
  /* 新增人類可讀標籤*/
  ImageString($img,4,5,$hi-5,$code[0],$fg);
  for ($x=0; $x    ImageString($img,5,$lw*(13 $x*6) 15,$hi 5,$code[$x 1],$fg);
ImageString($img,5, $lw*(53 $x*6) 15,$hi 5,$code[$x 6],$fg);
  }
  ImageString($img,4,$ lw*95 17,$hi -5,$code[11],$fg);
  /* 輸出標題和內容。 */
  header("Content-Type: image/png");
  ImagePNG($img);
}

UPCAbarcode('12345678901');

UPCAbarcode('12345678901');

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www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/314298.htmlTechArticle?php function UPCAbarcode($code) { $lw = 2; $嗨= 100; $Lencode = array( '0001101','0011001','0010011','0111101','0100011','0110001','0101111','01111011','0110111','000); 🎜>