Use PHP 2D array variable in HTML text input form value-attribute

Question

I am trying to enter a PHP 2D array variable as the value-attribute of a text input form in HTML.

Here is what I'm trying to do:

<?php

$test = array(array());
$test[0][0] = 123;

echo <<<_END

<html>
<head>
<body>
<form action = "test.php">
<input type = "text" value = "$test[0][0]">
</form>
<body>
<head>
<html>

_END;

?>

I get a warning saying: Notice: Array to string conversion in "path" on line 12, and the form just displays Array[0].

What is happening here? How should this be done to get correct results?

Jonathan Kuhn · Accepted Answer · 2015-03-09 22:12:16Z

1

Surround your variable with curly braces. So:

echo <<<_END

<html>
<head>
<body>
<form action = "test.php">
<input type = "text" value = "{$test[0][0]}">
</form>
<body>
<head>
<html>

_END;

It is best practice to surround your variables used inside of a string with curly braces. Especially array variables. This tells php that the variable name is everything between the curly braces.

answered Mar 9, 2015 at 22:12

Jonathan Kuhn

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