<?php
$input = '((rats + stoats) - 800 / 2)';
$tokens = token_get_all("<?php {$input}");
$expr = '';
foreach($tokens as $token){
if(is_string($token)){
if(in_array($token, array('(', ')', '+', '-', '/', '*'), true)){
$expr .= $token;
print "\n symbol: " . $expr;
}
continue;
}
list($id, $text) = $token;
if(in_array($id, array(T_DNUMBER, T_LNUMBER))){
$expr .= $text;
print "\n number: " . $expr;
}
}
eval("\$result = {$expr};");
print "\nexpr = " . $expr;
print "\nres = " . $result;
preferences:
37.78 ms | 402 KiB | 5 Q