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Function Watcher

Function Watcher

<? 

// tick function for watching functions 
// if $ret_funcs is true, a tick is not registered, 
// but instead, the function list is returned. 
function watch_functions_tick($ret_funcs=false) { 
    static $funcs = array(); 

    // do tick 
    if (!$ret_funcs) { 
     
        // get the current function from debug_backtrace 
        $trace = debug_backtrace(); 
        $trace = $trace[1]; 
        $func = $trace['function']; 
        if ($trace['class']) $func = $trace['class'].$trace['type'].$func; 

        // as long as the given function is a valid one, add it to the array 
        if ($func !== 'watch_functions_tick' && $func != 'unknown' && $func) { 
            $funcs[$func]++; 
            $funcs['__TICK_COUNT__']++; 
        } 
     
    // return the function array 
    } else { 
        return $funcs; 
    } 
} 

// output the function list with the number of ticks each 
// function received as well as the percentage of the total 
// ticks it represents     
function watch_functions_output() { 
     
    // retrieve the function list 
    $funcs = watch_functions_tick(true); 
    $tick_count = $funcs['__TICK_COUNT__']; 
    arsort($funcs); 
     
    // add the percentage onto each function entry 
    foreach ($funcs AS $k => $v) { 
        $funcs[$k] = sprintf('%d (%.2f%%)', $funcs[$k], $funcs[$k]*100/$tick_count); 
    } 
     
    // display the function list 
    print "<pre>"; 
    print_r($funcs); 
    print "</pre>"; 
} 

// start the ticking 
register_tick_function('watch_functions_tick'); 
?>
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