为什么in_array不适用于在PHP中使用循环创建的数组？

Question

Why in_array not work on array that create from loop php ?

this below code show Match found.

<?php
for ($i = 0; $i < 10; ++$i) {
    $people[] = $i;
}    
if (in_array('test', $people))
  {
  echo "Match found";
  }
else
  {
  echo "Match not found";
  }
?>

and this below code show Match not found.

<?php
$people = array("0","1","2","3","4","5","6","7","8","9");
if (in_array('test', $people))
  {
  echo "Match found";
  }
else
  {
  echo "Match not found";
  }
?>

How to solve first code to show Match not found

Answer 1

You just change

$people[] = $i; ---by--> $people[] = "$i";

Then you compare strings

<?php

for ($i = 0; $i < 10; ++$i) {
    $people[] = "$i";

}   

if (in_array('test', $people))
  {
  echo "Match found";
  }
else
  {
  echo "Match not found";
  }
?>