php - Calculate numbers from string -


this question has answer here:

i'm try calculate numbers inside string example: 

<?php $str = '6 + 12 - ( 2 * 3 )'; $results = some_function($str); echo $results; // outputs 12  ?>

can me this?

you can accomplish via eval function (it runs string if php).

<?php  function some_function($str) {     eval("return " . $str . ";"); }  $str = '6 + 12 - ( 2 * 3 )'; $results = some_function($str); echo $results;   ?>

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