If you want to execute a function on the last chain (without addional exec or done on the chain).
The code below will obtain the full chain from the source code and return the data after the last chain.
<?php
$abc = new Methods;
echo($abc->minus(12)->plus(32)); // output: -12+32
echo(
$abc->plus(84)
->minus(63)
); // output: +84-63
class Methods{
private $data = '';
private $chains = false;
public function minus($val){
$this->data .= '-'.$val;
return $this->exec('minus');
}
public function plus($val){
$this->data .= '+'.$val;
return $this->exec('plus');
}
private function exec($from){
// Check if this is the first chain
if($this->chains === false){
$this->getChains();
}
// Remove the first chain as it's
// already being called
if($this->chains[0] === $from){
array_shift($this->chains);
}
else
die("Can't parse your chain");
// Check if this is the last chain
if(count($this->chains) === 0){
$copy = $this->data;
// Clear data
$this->chains = false;
$this->data = '';
return $copy;
}
// If not then continue the chain
return $this;
}
private function getChains(){
$temp = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
// Find out who called the function
for ($i=0; $i < count($temp); $i++) {
if($temp[$i]['function'] === 'exec'){
$temp = $temp[$i + 1];
break;
}
}
// Prepare variable
$obtained = '';
$current = 1;
// Open that source and find the chain
$handle = fopen($temp['file'], "r");
if(!$handle) return false;
while(($text = fgets($handle)) !== false){
if($current >= $temp['line']){
$obtained .= $text;
// Find break
if(strrpos($text, ';') !== false)
break;
}
$current++;
}
fclose($handle);
preg_match_all('/>(\w.*?)\(/', $obtained, $matches);
$this->chains = $matches[1];
return true;
}
}