Online PHP editor | output for pvNTs

@ 2013-03-22T11:49:35Z

<?php

    const INT_SIGNED = 1;
    const INT_LE = 2;

    function isLittleEndian() {
        return pack('S', 0x00FF) === "\xFF\x00";
    }
    function is32Bit() {
        return PHP_INT_MAX < 0x80000000;
    }

    function unpack_int32($str, $flags = 0) {
        $length = strlen($str);
        if ($length < 4) {
            return false;
        } else if ($length > 4) {
            $str = substr($str, 0, 4);
        }

        $format = ($flags & INT_LE) ? 'V' : 'N';
        $result = unpack($format, $str);

        if (($result & 0x80000000) && ($flags & INT_SIGNED) && !is32Bit()) {
            $result = 0xFFFFFFFF00000000 | $result;
        }

        return $result;
    }

    var_dump(isLittleEndian(), is32Bit(), unpack_int32("\xFF\xFF\xFF\xFF", INT_SIGNED));
    var_dump(isLittleEndian(), is32Bit());

Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7: Fatal error: Uncaught TypeError: Unsupported operand types: array & int in /in/pvNTs:24 Stack trace: #0 /in/pvNTs(31): unpack_int32('\xFF\xFF\xFF\xFF', 1) #1 {main} thrown in /in/pvNTs on line 24
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.31, 7.1.0 - 7.1.23, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33: bool(true) bool(false) array(1) { [1]=> int(4294967295) } bool(true) bool(false)
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17: Parse error: syntax error, unexpected T_CONST in /in/pvNTs on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5: Parse error: parse error, unexpected T_CONST in /in/pvNTs on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error in /in/pvNTs on line 3
Process exited with code 255.

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