与循环或我:)

Question

我遇到一个奇怪的问题与循环Symfony2的奇怪的问题我的意思是我有品牌关联数组：

$makes = array(0 => '9FF', 
1 => 'AC', 
2 => 'AMG', 
3 => 'Alfa Romeo', 
4 => 'Alpina', 
5 => 'Ariel', 
6 => 'Ascari', 
7 => 'Aston Martin', 
8 => 'Audi', 
9 => 'B Engineering', 
10 => 'BAC', 
11 => 'BMW', 
12 => 'Beck', 
13 => 'Bentley', 
14 => 'Bertone', 
15 => 'Bizzarrini', 
16 => 'Brabus', 
17 => 'Bristol', 
18 => 'Brooke', 
19 => 'Bugatti', 
20 => 'Buick', 
21 => 'Cadillac', 
22 => 'Callaway', 
23 => 'Caparo', 
24 => 'Caterham', 
25 => 'Chevrolet', 
26 => 'Chrysler', 
27 => 'Citroen', 
28 => 'Cizeta Moroder', 
29 => 'Connaught', 
30 => 'Covini', 
31 => 'Dauer', 
32 => 'David Brown', 
33 => 'Dax', 
34 => 'De Lorean', 
35 => 'De Tomaso', 
36 => 'Dodge', 
37 => 'Dome', 
38 => 'ES Motorsports', 
39 => 'Elfin', 
40 => 'Ferrari', 
41 => 'Fiat', 
42 => 'Fioravanti', 
43 => 'Fisker', 
44 => 'Ford', 
45 => 'GM', 
46 => 'GTA', 
47 => 'Gemballa', 
48 => 'Ghia', 
49 => 'Ginetta', 
50 => 'Giugiaro', 
51 => 'Grinnall', 
52 => 'Gumpert', 
53 => 'Hennessey', 
54 => 'Heuliez', 
55 => 'Honda', 
56 => 'Invicta', 
57 => 'Isdera', 
58 => 'Iso', 
59 => 'Ital Design', 
60 => 'Jaguar', 
61 => 'Jeep', 
62 => 'Jensen', 
63 => 'Joss', 
64 => 'KTM', 
65 => 'Keio University', 
66 => 'Koenig', 
67 => 'Koenigsegg', 
68 => 'Lamborghini', 
69 => 'Lancia', 
70 => 'Land Rover', 
71 => 'LeBlanc', 
72 => 'Leading Edge', 
73 => 'Lexus', 
74 => 'Light Car Company', 
75 => 'Lingenfelter', 
76 => 'Lister', 
77 => 'Lotec', 
78 => 'Lotus', 
79 => 'MB Roadcars', 
80 => 'MG', 
81 => 'Marcos', 
82 => 'Maserati', 
83 => 'Maybach', 
84 => 'Mazda', 
85 => 'McLaren', 
86 => 'Melling', 
87 => 'Mercedes', 
88 => 'Mitsubishi', 
89 => 'Monteverdi', 
90 => 'Morgan', 
91 => 'Mosler', 
92 => 'Nissan', 
93 => 'Noble', 
94 => 'Oldsmobile', 
95 => 'Pagani', 
96 => 'Palmer', 
97 => 'Panoz', 
98 => 'Panther', 
99 => 'Peugeot', 
100 => 'Pininfarina', 
101 => 'Plymouth', 
102 => 'Pontiac', 
103 => 'Porsche', 
104 => 'Prodrive', 
105 => 'Radical', 
106 => 'Renault', 
107 => 'Rimac', 
108 => 'Rolls Royce', 
109 => 'Roush', 
110 => 'Ruf', 
111 => 'SCG', 
112 => 'SSC', 
113 => 'Saab', 
114 => 'Saleen', 
115 => 'Sbarro', 
116 => 'Schuppan', 
117 => 'Sin', 
118 => 'Spectre', 
119 => 'Spyker', 
120 => 'Stealth', 
121 => 'Strathcarron', 
122 => 'Studiotorino', 
123 => 'Subaru', 
124 => 'Superformance', 
125 => 'TVR', 
126 => 'Techart', 
127 => 'Tesla', 
128 => 'Tiger', 
129 => 'Toroidion', 
130 => 'Toyota', 
131 => 'Tramontana', 
132 => 'Trident', 
133 => 'UVA', 
134 => 'Ultima', 
135 => 'Vauxhall', 
136 => 'Vector', 
137 => 'Vemac', 
138 => 'Venturi', 
139 => 'Veritas', 
140 => 'Volkswagen', 
141 => 'Volvo', 
142 => 'Westfield', 
143 => 'Wiesmann', 
144 => 'Wolfrace', 
145 => 'Yamaha', 
146 => 'Zagato', 
147 => 'Zenvo'); 

和其他一些代码：

$pics = ''; 
     $logos = "http://www.supercarworld.com/images/logos/"; 
     $gif = ".gif"; 


     for ($x = 0; $x < count($makes); $x++) { 



       $pics = array($logos.$makes[$x].$gif); 






      print_r($pics[$x]); 












     $car = new Car(); 
     $car->setName('http://www.supercarworld.com/images/fullpics/595.jpg'); 

     // em entity manager 
     $em = $this->getDoctrine()->getManager(); 
     $em->persist($car); 
     $em->flush(); 


     $car = $this->getDoctrine() 
     ->getRepository('GrupaProjektBundle:Car') 
     ->findOneBy(array('id' => $car->getId(), 'name' => $car->getName())); 
     return $this->render('GrupaProjektBundle:Sc:supercars.html.twig', array('car' => $car, 
                       'pics' => $pics[$x], 
                       )); 
     } 

和当我想获得[$ x]时，行为很奇怪，它只显示零元素，即9FF，但是当我从$获得[0]或[1]时，它会起作用 为什么？ 我想让它迭代我缺少一些增量？

Answer 1

$ pics不是一个数组，或者你指定它的方式，它是一个只有一个元素的数组，&将在for循环的每次迭代中被覆盖。

您是不是要做到这一点，还是你在你的for循环要

$pics = array(); 

然后：

$pics[$x] = $logos.$makes[$x].$gif; 

我猜在这里，因为它不是立即清楚你想要什么实现。但我可以肯定地说你在for循环的每次迭代中都会覆盖$ pics。