Online PHP editor | output for aqapV

@ 2018-06-06T16:26:21Z

<?php

ini_set('display_errors', 'On');
error_reporting(E_ALL);

try {
    echo 'JSON decode of null: ' . json_decode(null) . PHP_EOL;
    
    if (json_last_error() !== JSON_ERROR_NONE) {
        echo 'Last JSON error: ' . safe_json_last_error_msg() . PHP_EOL;
    }
} catch (Throwable $t) {
    echo 'Error from JSON decode of null: ' . $t->getMessage() . PHP_EOL;
}

try {
    echo 'JSON decode of empty string: ' . json_decode('') . PHP_EOL;
    
    if (json_last_error() !== JSON_ERROR_NONE) {
        echo 'Last JSON error: ' . safe_json_last_error_msg() . PHP_EOL;
    }
} catch (Throwable $t) {
    echo 'Error from JSON decode of empty string: ' . $t->getMessage() . PHP_EOL;
}

function safe_json_last_error_msg()
{
    if (function_exists('json_last_error_msg')) {
        return json_last_error_msg();
    }

    switch (json_last_error()) {
        case JSON_ERROR_NONE: return 'No error';
        case JSON_ERROR_DEPTH: return 'Maximum stack depth exceeded';
        case JSON_ERROR_STATE_MISMATCH: return 'State mismatch (invalid or malformed JSON)';
        case JSON_ERROR_CTRL_CHAR: return 'Control character error, possibly incorrectly encoded';
        case JSON_ERROR_SYNTAX: return 'Syntax error';
        case JSON_ERROR_UTF8: return 'Malformed UTF-8 characters, possibly incorrectly encoded';
        default: return 'Unknown error';
    }
}

Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14: Deprecated: json_decode(): Passing null to parameter #1 ($json) of type string is deprecated in /in/aqapV on line 7 JSON decode of null: Last JSON error: Syntax error JSON decode of empty string: Last JSON error: Syntax error
Output for 7.0.0 - 7.0.30, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30: JSON decode of null: Last JSON error: Syntax error JSON decode of empty string: Last JSON error: Syntax error
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.30: JSON decode of null: JSON decode of empty string:
Output for 5.2.0 - 5.2.17: JSON decode of null: Fatal error: Call to undefined function json_last_error() in /in/aqapV on line 9
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6: Fatal error: Call to undefined function json_decode() in /in/aqapV on line 7
Process exited with code 255.
Output for 4.4.2 - 4.4.9: Parse error: syntax error, unexpected '{' in /in/aqapV on line 6
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: Parse error: parse error, unexpected '{' in /in/aqapV on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error in /in/aqapV on line 6
Process exited with code 255.

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