Is it possible to alias a function with a different name in PHP? Suppose we have a function with the name sleep
. Is there a way to make an alias called wa
If your PHP doesn't support use x as y syntax, in older PHP version you can define anonymous function:
$wait = create_function('$seconds', 'sleep($seconds);');
$wait(1);
Or place the code inside the constant, e.g.:
define('wait', 'sleep(1);');
eval(wait);
See also: What can I use instead of eval()?
This is especially useful if you've long piece of code, and you don't want to repeat it or the code is not useful for a new function either.
There is also function posted by Dave H which is very useful for creating an alias of a user function:
function create_function_alias($function_name, $alias_name)
{
if(function_exists($alias_name))
return false;
$rf = new ReflectionFunction($function_name);
$fproto = $alias_name.'(';
$fcall = $function_name.'(';
$need_comma = false;
foreach($rf->getParameters() as $param)
{
if($need_comma)
{
$fproto .= ',';
$fcall .= ',';
}
$fproto .= '$'.$param->getName();
$fcall .= '$'.$param->getName();
if($param->isOptional() && $param->isDefaultValueAvailable())
{
$val = $param->getDefaultValue();
if(is_string($val))
$val = "'$val'";
$fproto .= ' = '.$val;
}
$need_comma = true;
}
$fproto .= ')';
$fcall .= ')';
$f = "function $fproto".PHP_EOL;
$f .= '{return '.$fcall.';}';
eval($f);
return true;
}
nope. the way you wrote is the best way to do it.
What I have used in my CLASS
function __call($name, $args) {
$alias['execute']=array('done','finish');
$alias['query']=array('prepare','do');
if (in_array($name,$alias['execute'])){
call_user_func_array("execute",$args);
return TRUE;
}elseif(in_array($name,$alias['query'])){
call_user_func_array("query",$args);
return TRUE;
}
die($this->_errors.' Invalid method:'.$name.PHP_EOL);
}