Online PHP editor | output for M9jR9

@ 2015-12-02T02:11:54Z

<?php

interface ConfigValueInterface
{
    public function __toString();
}

interface ConfigWriterInterface
{
    
    public function write(ConfigValueInterface $value);
    
}

class WriteManager
{
    
    protected $writers = [];
    
    public function addWriter(ConfigWriterInterface $writer, $value_class)
    {
        $this->writers[$value_class] = $writer;
    }
    
    public function write(ConfigValueInterface $value)
    {
        $class = get_class($value);
        if (isset($this->writers[$class])) {
            $this->writers[$class]->write($value);
        }
    }
    
}

class BaseConfigValue implements ConfigValueInterface
{
    
    public $storage_location;
    
    public function __toString()
    {
        return "derp";
    }
    
}

class BaseConfigWriter implements ConfigWriterInterface 
{
    
    public function write(BaseConfigValue $value)
    {
        echo "writing to {$value->storage_location}";
    }
    
}

class ExampleGenerator
{
    
    public function generate()
    {
        $value = new BaseConfigValue();
        $value->storage_location = "/some/path/sample.config";
        
        return $value;
    }
    
}
// Set up manager
$manager = new WriteManager();
$manager->addWriter(new BaseConfigWriter, BaseConfigValue::class);


$generator = new ExampleGenerator();
$value = $generator->generate();
$manager->write($value);

Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: Fatal error: Declaration of BaseConfigWriter::write(BaseConfigValue $value) must be compatible with ConfigWriterInterface::write(ConfigValueInterface $value) in /in/M9jR9 on line 50
Process exited with code 255.
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Declaration of BaseConfigWriter::write(BaseConfigValue $value) must be compatible with ConfigWriterInterface::write(ConfigValueInterface $value) in /in/M9jR9 on line 50
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33: Fatal error: Declaration of BaseConfigWriter::write(BaseConfigValue $value) must be compatible with ConfigWriterInterface::write(ConfigValueInterface $value) in /in/M9jR9 on line 47
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28: Fatal error: Declaration of BaseConfigWriter::write() must be compatible with ConfigWriterInterface::write(ConfigValueInterface $value) in /in/M9jR9 on line 48
Process exited with code 255.

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