How to avoid 34 overridden by 124 in the following PHP code? I just want to keep the 34 and 124 both.
$arr = array(12, 34, "df"=>43, "1"=>124, 65);
$num = count($arr);
reset($arr);
for ($i = 1; $i <= $num; ++$i) {
echo 'The Current Position：' . key($arr);
echo '<br />';
echo 'The Current Value：'. current($arr);
next($arr);
echo '<br />';
echo '<br />';
}
PHP will always treat all numeric keys as integers even if they are inside string variables or quotes.
The following can make it quite apparent:
<?php
$arr = [1 => 'hi', '2' => 'bye', 'a1' => 'hiha'];
var_export($arr);
The solution is to prefix the values that you don't want indexed as integers with a letter.
Note that mixing indexed and associative arrays indicates a serious lack of organization that you will regret later, if you don't already.
Your array indexing is not valid.
You need to design an array with unique keys, let PHP do the indexing. you can change the index "1" with "one" for unique key.
If you print_r your array then you must see the result like this
Array
(
[0] => 12
[1] => 124
[df] => 43
[2] => 65
)
So don't make an array with duplicate key, you might loss data.
$arr = array(12, 34, "df" => 43, "one" => 124, 65);
foreach($arr as $key => $val){
echo $key." - ".$val."<br/>";
}
Result:
key - value
0 - 12
1 - 34
df - 43
one - 124
2 - 65