PhP数组如何获取键值

Question

I have a php array, $vararray, like so

[var1] => 1
[var2] => 1
[var3] => 1
[var4] => 1
[var5] => 2
[var6] => 2
[var7] => 1
[var8] => 1

After a bunch of operations i get a key/index of var8. How do I get value of var8 using the key? I can get the key using array key function. But is there a function for array value? I checked php manual but didnt seem to find any.

Answer 1

If $key contains the key you're interested in (eg var8 ) you use

$vararray[$key]

to access the value of the corresponding element.

Answer 2

You can access it like this:

$value = $vararray['var8'];

Or you can loop over the array using a foreach loop: http://php.net/manual/en/control-structures.foreach.php

foreach ($vararray as $value) {
    echo $value;
}

Answer 3

像这样可访问

$var8Value = $vararray['var8'];

Answer 4

For getting all keys value like $var1 , $var2 , $var3 , .... Try this

foreach($vararray as $key=>$val){
    $$key = $val;
}
echo $var1;
echo $var2;
echo $var3;
echo $var4;
echo $var5;
echo $var6;
echo $var7;
echo $var8;