PHP - 带两个字符串的随机文本

Question

如何加入这两个字符串并根据条目列表创建随机链接。

// Add a link and the associated image // 
$adlink1="http://www.****.com/sale.php"; 
$adlinkpic1="http://www.***-cdn.com/blogAssets/ad/1.jpg"; 
$adlink2="http://www.*****.com/sale.php"; 
$adlinkpic2="http://www.**-cdn.com/blogAssets/ad/2.jpg"; 
$adlink3="http://www.**.com/product.php?prodref=564_white&ref=AddSphere"; 
$adlinkpic3="http://www.**-cdn.com/blogAssets/ad/3.jpg"; 
$adlink4="http://www.**.com/wedding-boutique.php"; 
$adlinkpic4="http://www.**-cdn.com/blogAssets/ad/4.jpg"; 
$adlink5="http://www.**.com/made-to-measure-service.php"; 
$adlinkpic5="http://www.**-cdn.com/blogAssets/ad/5.jpg"; 

// SHOW ONE AD LINK 

srand ((double) microtime() * 1000000); 
$adlink[] + $adlinkpic[] = rand(0,count($quotes)-1); 
echo "<a href='$adlink'><img src='$adlinkpic' />"; 

// SHOW TWO AD LINKS /cannot be same 

// code here 

Answer 1

这是很容易把你所有的链接在（关联）数组，然后使用array functions操纵它们：

<?php 
$ad = array(
    array(
     "url" => "http://www.****.com/sale.", 
     "img" => "http://www.***-cdn.com/blogAssets/ad/1.jpg" 
    ), 
    array(
     "url" => "http://www.*****.com/sale.", 
     "img" => "http://www.**-cdn.com/blogAssets/ad/2.jpg" 
    ), 
    array(
     "url" => "http://www.**.com/product.php", 
     "img" => "http://www.**-cdn.com/blogAssets/ad/3.jpg" 
    ), 
    array(
     "url" => "http://www.**.com/wedding-boutique.", 
     "img" => "http://www.**-cdn.com/blogAssets/ad/4.jpg" 
    ), 
    array(
     "url" => "http://www.**.com/made-to-measure-service.", 
     "img" => "http://www.**-cdn.com/blogAssets/ad/5.jpg" 
    ) 
    // more ads 
); 

$id = array_rand($ad); // choose a random index from the array 
echo "<a href=\"{$ad[$id]['url']}\"><img src=\"{$ad[$id]['img']}\" /></a>\n"; 
unset($ad[$id]);  // remove the chosen one so that it is not displayed on next pass 

$id = array_rand($ad); 
echo "<a href=\"{$ad[$id]['url']}\"><img src=\"{$ad[$id]['img']}\" /></a>\n"; 
unset($ad[$id]); 

Answer 2

我会忍不住做这样的事情：

<?php 
    // Add a link and the associated image // 
    $adlink1="http://www.****.com/sale.php"; 
    $adlinkpic1="http://www.***-cdn.com/blogAssets/ad/1.jpg"; 
    $adlink2="http://www.*****.com/sale.php"; 
    $adlinkpic2="http://www.**-cdn.com/blogAssets/ad/2.jpg"; 
    $adlink3="http://www.**.com/product.php?prodref=564_white&ref=AddSphere"; 
    $adlinkpic3="http://www.**-cdn.com/blogAssets/ad/3.jpg"; 
    $adlink4="http://www.**.com/wedding-boutique.php"; 
    $adlinkpic4="http://www.**-cdn.com/blogAssets/ad/4.jpg"; 
    $adlink5="http://www.**.com/made-to-measure-service.php"; 
    $adlinkpic5="http://www.**-cdn.com/blogAssets/ad/5.jpg"; 

    $links = array(); 
    $links[0]=array('link'=>$adlink1,'pic'=>$adlinkpic1); 
    $links[1]=array('link'=>$adlink2,'pic'=>$adlinkpic2); 
    $links[2]=array('link'=>$adlink3,'pic'=>$adlinkpic3); 
    $links[3]=array('link'=>$adlink4,'pic'=>$adlinkpic4); 
    $links[4]=array('link'=>$adlink5,'pic'=>$adlinkpic5); 

    $alreadyAdded=array(); 
    for ($i=0;$i<2;$i++) { 
    $added = false; 
    while (!$added) { 
     // generate random number 
     $rand = mt_rand(0,4); 
     if (!in_array($rand,$alreadyAdded)) { 
     echo "<a href='".$links[$rand]['link']."'><img src='".$links[$rand]['pic']."' />"; 
     $added = true; 
     $alreadyAdded[]=$rand; 
     } 
    } 
    } 

编辑：注意到你想超过1输出，更新的代码，以反映。