问题
i have a form data and the data's array like this:
$datas=array("x-1","y-2","y-2","y-3","t-1");
my foreach loop:
foreach($datas as $x => $data){
$data=explode("-",$data);
if($data[0]==$data[0]+1){$n=1;}else{$n=0;}
$keys[$x]=$data[0].$n++;
$vals[$x]=$data[1];
}
i couldn't write the true code, my 3rd line is wrong i think (if($data[0]=$data[0]+1){$n="1";}else{$n="";}) so, i wanna rename the duplicate keys by giving number. my output should be like this:
x=1 y1=1 y2=2 y3=2 t1=1
回答1:
Try
$datas=array("x-1","y-2","y-2","y-3","t-1");
$i=0;
$n=1;
foreach($datas as $x => $data){
$data=explode("-",$data);
$data2=explode("-",$datas[$i+1]);
if($data[0]==$data2[0])
{
$keys[$x]=$data[0].$n;
$n=$n+1;
}
else
{
$keys[$x]=$data[0].$n;
$n=0;
}
$vals[$x]=$data[1];
$i++;
}
回答2:
This code has error you use =
Which will assign value , not compare it.
also n
should be integer not string
To fix that
foreach($datas as $x => $data){
$data=explode("-",$data);
if($keys[$x]==$keys[$x+1]){$n=1;}else{$n=0;}
$keys[$x]=$data[0].$n++;
$vals[$x]=$data[1];
}
回答3:
if($data[0]=$data[0]+1){$n="1";}else{$n="";}
Use == instead of = for the if statements
来源:https://stackoverflow.com/questions/23540944/php-rename-duplicate-keys-by-giving-number-in-foreach