Functions that take faulty parameters without notice in PHP7.4 but raise a type-error in PHP8

CallInPHP74.php

<?php
/**
 * This file reads the previously created file and executes the listed function calls via eval.
 * As eval throws up when something goes south I needed to exclude some calls, where pass-by-reference is used
 * This script will then check whether a warning is raised or not and if not, add the function call to the file 
 * "problematicFunctionCalls" and the function itself to the "problematicFunctions" file.
 */
$wasError = false;

function myErrorHandler(int $errno , string $errstr , ?string $errfile = null  , ?int $errline = null , ?array $errcontext = [] ): bool
{
    global $wasError;
    echo $errstr . '::';
    $wasError = true;
}
set_error_handler('myErrorHandler');
error_reporting(E_ALL);

$coolCalls = [
    "openssl_pkcs12_read(null, 'This is a string', 2)",
    "openssl_pkcs12_read(null, 'This is a string', 2.3)",
    "openssl_pkcs12_read(null, 'This is a string', null)",
    "openssl_pkcs12_read(null, 'This is a string', true)",
    "openssl_pkcs12_read(null, 'This is a string', 'This is a string')",
    "openssl_pkcs7_read(null, 2)",
    "openssl_pkcs7_read(null, 2.3)",
    "openssl_pkcs7_read(null, null)",
    "openssl_pkcs7_read(null, true)",
    "openssl_pkcs7_read(null, 'This is a string')",
    "openssl_private_encrypt(null, null, 2, 2)",
    "openssl_private_encrypt(null, null, 2, 2.3)",
    "openssl_private_encrypt(null, null, 2, null)",
    "openssl_private_encrypt(null, null, 2, true)",
    "openssl_private_encrypt(null, null, 2, 'This is a string')",
    "openssl_private_decrypt(null, null, 2, 2)",
    "openssl_private_decrypt(null, null, 2, 2.3)",
    "openssl_private_decrypt(null, null, 2, null)",
    "openssl_private_decrypt(null, null, 2, true)",
    "openssl_private_decrypt(null, null, 2, 'This is a string')",
    "openssl_public_encrypt(null, null, 2, 2)",
    "openssl_public_encrypt(null, null, 2, 2.3)",
    "openssl_public_encrypt(null, null, 2, null)",
    "openssl_public_encrypt(null, null, 2, true)",
    "openssl_public_encrypt(null, null, 2, 'This is a string')",
    "openssl_public_decrypt(null, null, 2, 2)",
    "openssl_public_decrypt(null, null, 2, 2.3)",
    "openssl_public_decrypt(null, null, 2, null)",
    "openssl_public_decrypt(null, null, 2, true)",
    "openssl_public_decrypt(null, null, 2, 'This is a string')",
];

$coolModules = [
    'openssl_pkcs12_read',
    'openssl_pkcs7_read',
    'openssl_private_',
    'openssl_public_',
    'openssl_sign',
    'openssl_seal',
    'openssl_open',
    'openssl_encrypt',
    'openssl_decrypt',
    'openssl_random_pseudo_bytes',
    'preg_match',
    'pcntl_waitpid',
    'pcntl_sigprocmask',
    'getopt',
    'dns_get_record',
    'dns_get_mx',
    'getmxrr',
    'similar_text',
    'parse_str(null',
    'sscanf(\'This is a string\', null, ',
    'exec(null, null,',
    'system(null,',
    'passthru(null,',
    'fsockopen(2, null, null, 2.3,',
    'fsockopen(\'This is a string\', null, null, 2.3, ',
    'pfsockopen(2, null, null, 2.3, ',
    'pfsockopen(\'This is a string\', null, null, 2.3, ',
    'getimagesize(null, ',
    'getimagesizefromstring(null,',
    'stream_socket_client(null, null, 2.3, 2, null,',
    'stream_socket_client(null, null, null, 2, null,',
    'stream_socket_server(null, null, 2, null, ',
    'stream_socket_server(null, null, null, null, ',
    'grapheme_extract(2, 2, 2, null, ',
    'grapheme_extract(\'This is a string\', 2, 2, null, ',
    'idn_to_ascii(2, 2, null, ',
    'idn_to_ascii(\'This is a string\', 2, null, ',
    'idn_to_utf8(2, 2, null,',
    'idn_to_utf8(\'This is a string\', 2, null,',
    'intltz_get_canonical_id(null, ',
    'mb_parse_str(null,',
    'mb_convert_variables(null, null, null, ',
    'mb_ereg(\'This is a string\', null, ',
    'mb_eregi(\'This is a string\', null, ',
    'socket_create_pair(2, 2, null,',
];

$fh = fopen(__DIR__ . '/problematicFunctions.txt', 'w+');
$fh2 = fopen( __DIR__ . '/problematicFUnctioncalls.txt', 'w+');

foreach (file(__DIR__ . '/toBeCalledInPHP7.4') as $line) {
    $line = trim($line);

    if (strpos($line, 'Value') === 0) {
        continue;
    }

    if (in_array($line, $coolCalls)) {
        continue;
    }

    foreach ($coolModules as $coolModule) {
        if (strpos($line, $coolModule) === 0) {
            continue 2;
        }
    }
    $wasError = false;
    try {
        $line = preg_replace('/\/\/.*$/','', $line);
        echo $line . ' //';
        eval($line . ';');
        echo error_get_last();
    } catch (Throwable $e) {
        $wasError = true;
        echo $e->getMessage() . '==';
    }
    echo ($wasError?"true":'false') . PHP_EOL;
    if (! $wasError) {
        fwrite($fh2,sprintf('%s does not cause 7.4 to raise an issue but results in a TypeException in 8!', $line) . PHP_EOL);
        fwrite($fh, substr($line, 0, strpos($line, '(')) . PHP_EOL);
    }

}

fclose($fh);
fclose($fh2);

callInPHP8.php

<?php

/**
 * This script creates a file that contains calls for functions that result in a TypeError when run in PHP8.
 */
 
$writeStuff = [];
$dotlen = 0;
$trivialParameters = [
    'string',
    'int',
    'float',
    'double',
    'null',
    'bool',
    '?string',
    '?int',
    '?float',
    '?double',
    '?bool',
];

$omitFunctions = [
    'func_get_arg',
    'error_reporting',
    'set_time_limit',
    'output_add_rewrite_var',
    'sleep',
    'time_nanosleep',
    'readline',
];

$omitModules = [
    'sodium',
    'ob',
    'posix',
    'pg',
    'readline'

];

foreach (get_defined_functions()['internal'] as $function) {
    if (in_array($function, $omitFunctions)) {
        continue;
    }

    foreach ($omitModules as $module) {
        if (strpos($function, $module . '_') === 0) {
            continue 2;
        }
    }
//echo '__' . $function . '::';

    $funcReflection = new ReflectionFunction($function);

    $params = [];

    $parameters = $funcReflection->getParameters();

    if (count($parameters) < 1) {
        continue;
    }
    $executeParams = [];
    foreach ($parameters as $key => $parameter) {
        if (! in_array((string) $parameter->getType(), $trivialParameters)) {
            //write('error', 'function %s requires a non-trivial parameter', $function);
            continue(2);
        }

        $callParameters = [];

        foreach ($parameters as $defaultKey => $defaultParameter) {
            if ($key === $defaultKey) {
                continue;
            }

            $callParameters[$defaultKey] = getTypeValue((string) $defaultParameter->getType())[0];
        }

        foreach ($trivialParameters as $trivialParameter) {
            if ($trivialParameter === (string) $parameter->getType()) {
                continue;
            }
            foreach (getTypeValue($trivialParameter) as $callParam) {
                $callParameters[$key] = $callParam;
                try {
                    @$function(...$callParameters);
                    writeDot();
                } catch (TypeError $e) {
                    writeDot('F');
                    write ('notice', '%s(%s) //%s', $function, implodeToString(', ', $callParameters), $e->getMessage());
                } catch (ValueError $e) {
                    writeDot('V');
                    write ('notice', 'Value Error: function "%s" with parameters "%s" threw up', $function, implodeToString(', ', $callParameters));
                } catch (Throwable $e) {
                    //
                }
            }
        }

    }
    //write('notice', "function %s uses these tpyes as parameters: %s", $function, implode(', ', $params));
}
 file_put_contents(__DIR__ . '/toBeCalledInPHP7.4', implode(PHP_EOL, $writeStuff));

function implodeToString(string $separator, array $values): string
{
    foreach ($values as $key => $value) {
        if  ($value === true || $value === false) {
            $values[$key] = $value ? 'true' : 'false';
            continue;
        }
        switch ($value) {
            case null:
                $values[$key] = 'null';
                break;
            case 'This is a string':
                $values[$key]  = "'This is a string'";
                break;
            default:
                $values[$key] = $value;
        }
    }

    return implode($separator, $values);
}

function writeDot(string $letter = '.'): void
{
    global $dotlen;
    echo $letter;
    $dotlen++;
    if ($dotlen > 64) {
        $dotlen = 0;
        echo PHP_EOL;
    }
}

function getTypeValue(string $type) : array
{
    switch ($type) {
        case 'string':
            return ['This is a string'];
        case 'int':
            return [2];
        case 'float':
        case 'double':
            return [2.3];
        case 'null':
            return [null];
        case 'bool':
            return [true];
        case'?string':
            return ['This is a string', null];
        case '?int':
            return [2, null];
        case '?float':
        case '?double':
            return [2.3, null];
        case '?bool':
            return [true, null];
        default:
            return [null];

    }
}

function write(string $level, string $string, ...$replacements): void
{
    global $writeStuff;
    if ($level === 'error') {
        return;
    }
    $writeStuff[] = sprintf($string, ...$replacements);
}

problematicFunctionCalls

get_class_vars(2)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
get_class_vars(2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
get_class_vars(2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
get_class_vars(null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
get_class_vars(true)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
get_class_vars('This is a string')  does not cause 7.4 to raise an issue but results in a TypeException in 8!
get_class_vars(null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
get_class_vars(2)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
get_class_vars(null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
get_class_vars(2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
get_class_vars(null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
get_class_vars(2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
get_class_vars(null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
get_class_vars(true)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
get_class_vars(null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
filter_input(2, 2, null, 'This is a string')  does not cause 7.4 to raise an issue but results in a TypeException in 8!
filter_input(2, 'This is a string', null, 'This is a string')  does not cause 7.4 to raise an issue but results in a TypeException in 8!
filter_input(2, 'This is a string', null, 'This is a string')  does not cause 7.4 to raise an issue but results in a TypeException in 8!
strtr(null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
strtr(null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
strtr(null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
strtr(null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
strtr(null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
strtr(null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vprintf(null, 2)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vprintf(null, 2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vprintf(null, 2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vprintf(null, null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vprintf(null, true)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vprintf(null, 'This is a string')  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vprintf(null, null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vprintf(null, 2)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vprintf(null, null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vprintf(null, 2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vprintf(null, null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vprintf(null, 2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vprintf(null, null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vprintf(null, true)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vprintf(null, null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vsprintf(null, 2)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vsprintf(null, 2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vsprintf(null, 2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vsprintf(null, null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vsprintf(null, true)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vsprintf(null, 'This is a string')  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vsprintf(null, null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vsprintf(null, 2)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vsprintf(null, null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vsprintf(null, 2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vsprintf(null, null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vsprintf(null, 2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vsprintf(null, null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vsprintf(null, true)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
vsprintf(null, null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
decbin('This is a string')  does not cause 7.4 to raise an issue but results in a TypeException in 8!
decbin('This is a string')  does not cause 7.4 to raise an issue but results in a TypeException in 8!
decoct('This is a string')  does not cause 7.4 to raise an issue but results in a TypeException in 8!
decoct('This is a string')  does not cause 7.4 to raise an issue but results in a TypeException in 8!
dechex('This is a string')  does not cause 7.4 to raise an issue but results in a TypeException in 8!
dechex('This is a string')  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create(2, 2, null, null, 'This is a string', 'This is a string')  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create(2, 2, null, null, 'This is a string', 2)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create(2, 2, null, null, 'This is a string', 2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create(2, 2, null, null, 'This is a string', 2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create(2, 2, null, null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create(2, 2, null, null, 'This is a string', true)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create(2, 2, null, null, 'This is a string', 2)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create(2, 2, null, null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create(2, 2, null, null, 'This is a string', 2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create(2, 2, null, null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create(2, 2, null, null, 'This is a string', 2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create(2, 2, null, null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create(2, 2, null, null, 'This is a string', true)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create(2, 2, null, null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', 'This is a string')  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', 2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', 2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', true)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', 'This is a string')  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', 2)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', 2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', 2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', true)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', 'This is a string')  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', 2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', 2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', true)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', 'This is a string')  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', 2)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', 2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', 2.3)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', true)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
datefmt_create('This is a string', 2, null, null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
mb_decode_numericentity(null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
mb_decode_numericentity(null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
mb_decode_numericentity(null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
mb_decode_numericentity(null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
mb_decode_numericentity(null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
mb_decode_numericentity(null, 'This is a string', null)  does not cause 7.4 to raise an issue but results in a TypeException in 8!
xdebug_stop_code_coverage('This is a string')  does not cause 7.4 to raise an issue but results in a TypeException in 8!
xdebug_stop_code_coverage('This is a string')  does not cause 7.4 to raise an issue but results in a TypeException in 8!

problematicFunctions

datefmt_create
decbin
dechex
decoct
filter_input
get_class_vars
mb_decode_numericentity
strtr
vprintf
vsprintf
xdebug_stop_code_coverage