John Davidson

Message:

$length =count($k);

$name=array();

$j=$k[0];

$out =preg_grep("[".$j."]",$database);

array_push($name,$out);

for($x=1;$x<$length;$x++)

{

    $j = $k[$x];

    $out = preg_grep("[" . $j . "]", $name);

    $name = array_intersect($out, $name);

}

i want to replace$namewith$outby computing the intersection of this two arrays,but it shows

Warning: Array to string conversion

---

i post all my code there now.what i want to do was found people's name
include all the alphabets the$keys lent.

<?php

$keys ='aed';

$database = file('database.txt');//there same people's name in it,

$k = str_split($keys);

$length =count($k);

$name=array();

$j=$k[0];

$out =preg_grep("[".$j."]",$database);

array_push($name,$out);

for($x=1;$x<$length;$x++)

{

    $j = $k[$x];

    $out = preg_grep("[" . $j . "]", $name);

    $name = array_intersect($out, $name);

}

echo '<pre>';

var_dump($name);

echo '</pre>';

---

My Answer:
Yes, you can use `array_intersect` in PHP to find the intersection of two or more arrays. However, the code snippet you provided seems to be incomplete and does not show the usage of `array_intersect`.

If you want to find the intersection of arrays, you can use `array_intersect` like this:

php
$array1 = array(1, 2, 3, 4, 5);
$array2 = array(3, 4, 5, 6, 7);

$intersection = array_intersect($array1, $array2);

print_r($intersection);


This will output:


Array
(
[2] => 3
[3] => 4
[4] => 5
)


In this example, the intersection of `$array1` and `$array2` is `[3, 4, 5]`.