Question

目前我有一个代码看起来像:

for ($i=0; $i<=($num_newlines - 1); $i++) 
{
$tweetcpitems->post( statuses/update , 
                    array( status  => wordFilter("The item $parts[$i]  has been released on Club Penguin. View it here:   http://clubpenguincheatsnow.com/tools/swfviewer/items.swf?id=$parts[$id]")));
sleep(90);
}

我想做的是使“i+++”部分增加两个而不是一个,但我要怎么做呢?请帮助!

Answer 1

for ($i=0; $i<=($num_newlines - 1); $i+=2) {

Answer 2

$i++ : increment by one

$i+=2 : increment by two

$i+=3 : increment by three

等

Answer 3

对于那些寻求加薪对数(如1-2至3-4)的人:

解决方案一:

//initial values
$n_left = 1;
$n_right = 2;

for ($i = 1; $i <= 5; $i++) {
    
    print "
" . $n_left . "-" . $n_right;   
    
    $n_left =+ $n_left+2;
    $n_right =+ $n_right+2; 
}
//result: 1-2 3-4 5-6 7-8 9-10

解决方案二:

for ($y = 0; $y <= 9; $y+=2) {
    
    print "
" . ($y+1) . "-" . ($y+2);  

}
//result: 1-2 3-4 5-6 7-8 9-10

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