我如何在数组中搜索

Question

I have databases with encrypted datas (name and surname). In my code I retrieves data to array and decrypt name and surname.

for ($i=0;$i<$pocet;$i++)
{
 $row= mysqli_fetch_array($vysledek);  
 $name = $c_hash->decrypt($row['name']);
 $surname = $c_hash->decrypt($row['surname']);
 $a_name['id']=$name;
 //echo $a_name['id'].' ';
 $a_surname['id']=$surname;
 //echo $a_surname['id'];
 //echo '<br />';
}
enter code here

But how can I do searching in this array? For example user want to find name = "John". Please, can smb help me or give me a advice?

Thanks M.

Answer 1

How about array_search or in_array ?

PHP Manual array_search

PHP Manual in_array

Answer 2

please provide your full code.its not enough for understand your need.I guess you ask for code like this.

if (in_array("John", $a_name)) {
   echo "John found";
}

Answer 3

if you want to search within an array you can use in_array :

<?php
$os = array("Mac", "NT", "Irix", "Linux");
if (in_array("Irix", $os)) {
    echo "Got Irix";
}
if (in_array("mac", $os)) {
    echo "Got mac";
}
?>

or if you want to search in associative array

<?php
$search_array = array('first' => 1, 'second' => 4);
if (array_key_exists('first', $search_array)) {
    echo "The 'first' element is in the array";
}
?>

and this one returns the first corresponding key of that value in the array

<?php
$array = array(0 => 'blue', 1 => 'red', 2 => 'green', 3 => 'red');

$key = array_search('green', $array); // $key = 2;
$key = array_search('red', $array);   // $key = 1;
?>

hope these codes help you out