how to catch all errors in php code example

Example 1: php try catch

<?php

function test() {
    try {
        throw new Exception('foo');
    } catch (Exception $e) {
        return 'catch';
    } finally {
        return 'finally';
    }
}

echo test();
?>

Example 2: php thorwable vs exception

Throwable does not work on PHP 5.x.

To catch both exceptions and errors in PHP 5.x and 7, add a catch block for Exception AFTER catching Throwable first.
Once PHP 5.x support is no longer needed, the block catching Exception can be removed.

try
{
   // Code that may throw an Exception or Error.
}
catch (Throwable $t)
{
   // Executed only in PHP 7, will not match in PHP 5
}
catch (Exception $e)
{
   // Executed only in PHP 5, will not be reached in PHP 7
}