How would I add a variable to my PHP array?

Question

I am making a test version of adding users to an array and need to find a way to add the user's name variable to my array.

I am using Repl.it's PHP Web Server, which means it runs in a browser (because Chrome OS) and just have PHP. My code looks somewhat like :

<html>
<body>

Welcome <?php echo $_POST["name"]; ?><br>
You will be added to a list of users
<?php
$usernames = array("John Kennedy", "Barrack Ohbama", "Abraham Lincon")
array_push ($usernames, $_POST["name"]);
for($x = 0; $x < $arrlength; $x++) {
    echo $usernames[$x];
    echo "<br>";
}
?>
</body>
</html>

But when I plug it in, I get:

172.18.0.1:51360 [500]: /list.php - syntax error, unexpected 'array_push' (T_STRING) in /home/runner/list.php on line 8

Possible duplicate of PHP parse/syntax errors; and how to solve them? — user10051234
– user10051234, Commented Jun 13, 2019 at 23:45

ggorlen · Accepted Answer · 2019-06-14 01:33:08Z

2

You're missing a semicolon:

$usernames = array("John Kennedy", "Barrack Ohbama", "Abraham Lincon");
#                                                                     ^

PHP is sometimes unclear about error messaging and takes some getting used to.

edited Jun 14, 2019 at 1:33

answered Jun 13, 2019 at 23:37

ggorlen

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1 Comment

symlink Over a year ago

Adding to @ggorlen's answer, you have a var called $arrlength that is supposedly an integer, but it is never declared. Instead you probably want count($usernames)

Benjamin · Accepted Answer · 2019-06-14 02:46:25Z

0

You can always add new elements to array using array_push variant:

<?php
$usernames[] = $_POST["name"];
?>

If you want to set the key of new element, is also allowed

<?php
$usernames[$key] = $_POST["name"];
?>

https://php.net/manual/en/function.array-push.php

answered Jun 14, 2019 at 2:46

Benjamin

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