我一直在玩，试图从字符串生成QR码而没有任何运气。我正在使用CodeIgniter。我尝试了Packagist，bacon / bacon-qr-code和endroid / qrcode两个不同的软件包。下面是培根控制器中的代码：
$renderer = new \BaconQrCode\Renderer\Image\Png();
$renderer->setHeight(256);
$renderer->setWidth(256);
$writer = new \BaconQrCode\Writer($renderer);
$writer->writeFile('Hello World!', 'qrcode.png');
当我运行此代码时，我收到错误＆＃39;未找到phpass类文件＆＃39;。 所以我然后通过spark安装了phpass，我仍然得到同样的错误。谁能告诉我我做错了什么？
答案 0 :(得分：1)
第一个也在运作（也可能是第二个）。 你需要以这种方式使用它（至少）：
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
use \BaconQrCode\Renderer\Image\Png;
use \BaconQrCode\Writer;
class Qrcode
{
public function test()
{
$renderer = new Png();
$renderer->setHeight(256);
$renderer->setWidth(256);
$writer = new Writer($renderer);
$writer->writeFile('Hello World!', 'qrcode.png');
//var_dump($writer);
}
}
APPPATH . 'controllers/Test.php' <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Test extends CI_Controller
{
public function __construct()
{
parent::__construct();
}
public function index()
{
$this->qrcode();
}
public function qrcode()
{
$this->load->library('qrcode');
$this->qrcode->test();
}
}
FCPATH . 'qrcode.png'图像将在from visual import *
import string
import random
class Cube:
def __init__(self):
self.surfaces = { 'r': (color.red, (1, 0, 0)),
'o': (color.orange, (-1, 0, 0)),
'y': (color.yellow, (0, 1, 0)),
'b': (color.blue, (0, -1, 0)),
'w': (color.white, (0, 0, 1)),
'g': (color.green, (0, 0, -1))}
self.fps = 30
self.wholeSurfaces = []
self.initialPosition = []
self.commandsList = []
def createCube(self):
for colour, axis in self.surfaces.itervalues():
for x in (-1, 0, 1):
for y in (-1, 0, 1):
# Start with all powierzchniaBoczna on the top face, then rotate them "down"
# to the appropriate face.
powBoczna = box(color=colour, pos=(x, y, 1.5),
length=0.98, height=0.98, width=0.05)
cos_kat = dot((0, 0, 1), axis)
if cos_kat == 0: #alfa = 90 + kPI
obliczonaOsObrotu = cross((0, 0, 1), axis) #iloczyn wektorowy
else:
obliczonaOsObrotu=(1, 0, 0)
powBoczna.rotate(angle=acos(cos_kat), axis=obliczonaOsObrotu, origin=(0, 0, 0))
self.wholeSurfaces.append(powBoczna)
#remember initial position
v = (float(powBoczna.pos.x), float(powBoczna.pos.y), float(powBoczna.pos.z))
self.initialPosition.append(v)
def solveCube(self):
print self.commandsList
self.commandsList.reverse()
print self.commandsList
for i in self.commandsList:
self.rotateCube(self.reverseCommand(i), 10000)
self.commandsList = []
def reverseCommand(self, key):
if (key.islower()): return key.upper()
else: return key.lower()
def rotateCube(self, key, refreshRate):
colour, axis = self.surfaces[key.lower()]
if (key.isupper()): kat = (pi / 2.0)
else: kat = -pi/2.0
for r in arange(0, kat, kat / self.fps):
rate(refreshRate)
for surface in self.wholeSurfaces:
if dot(surface.pos, axis) > 0.5:
surface.rotate(angle=kat / self.fps, axis=axis, origin=(0, 0, 0))
def beginLoop(self):
while True:
key = scene.kb.getkey()
if (key.lower() in self.surfaces):
self.commandsList.append(key)
self.rotateCube(key, self.fps)
elif key == "k":
self.solveCube()
elif key == "a":
i = 0
print "================="
for surface in self.wholeSurfaces:
print "%s\n(%s,%s,%s)" % (self.initialPosition[i], surface.pos.x, surface.pos.y, surface.pos.z)
if self.initialPosition[i][0] == float(surface.pos.x) and self.initialPosition[i][1] == float(surface.pos.y) and self.initialPosition[i][2] == float(surface.pos.z): print "equal"
else: print "not equal"
print ""
i+=1
if __name__ == "__main__":
myCube = Cube()
myCube.createCube()
myCube.beginLoop()
文件中生成。
答案 1 :(得分：0)
您可以使用Google QR Codes API.
生成字符串的QR代码https://chart.googleapis.com/chart?chs=300x300&cht=qr&chl=Hello+world&choe=UTF-8