<?php
$input = '((\ln(800) + 20) - 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;
- Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.37, 5.6.0 - 5.6.23, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 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 - 8.3.6
- symbol: (
symbol: ((
symbol: (((
number: (((800
symbol: (((800)
symbol: (((800)+
number: (((800)+20
symbol: (((800)+20)
symbol: (((800)+20)-
number: (((800)+20)-800
symbol: (((800)+20)-800/
number: (((800)+20)-800/2
symbol: (((800)+20)-800/2)
expr = (((800)+20)-800/2)
res = 420
- Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
- Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/hLVFQ on line 5
symbol: (
symbol: ((
symbol: (((
number: (((800
symbol: (((800)
symbol: (((800)+
number: (((800)+20
symbol: (((800)+20)
symbol: (((800)+20)-
number: (((800)+20)-800
symbol: (((800)+20)-800/
number: (((800)+20)-800/2
symbol: (((800)+20)-800/2)
expr = (((800)+20)-800/2)
res = 420
preferences:
269.43 ms | 403 KiB | 379 Q