Online PHP editor | output for OEONE

@ 2016-01-17T02:41:44Z

<?php

    $search = 'Hello world.';
    $test = 'world';
    
    $pos = strpos($search, $test);
    
    echo $pos + "\r\n";

    if (!$pos)
        echo "1. Not found";
    else
        echo "1. Found";

    echo "\r\n";

    if ($pos != true)
        echo "2. Not found";
    else
        echo "2. Found";

    echo "\r\n";

    if ($pos === false)
        echo "3. Not found";
    else
        echo "3. Found";

    echo "\r\n";

    if ($pos == false)
        echo "4. Not found";
    else
        echo "4. Found";

?>

Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Fatal error: Uncaught TypeError: Unsupported operand types: int + string in /in/OEONE:8 Stack trace: #0 {main} thrown in /in/OEONE on line 8
Process exited with code 255.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33: Warning: A non-numeric value encountered in /in/OEONE on line 8 61. Found 2. Found 3. Found 4. Found
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33: 61. Found 2. Found 3. Found 4. Found

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