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@ 2018-12-12T05:14:37Z

<?php

function args_to_assoc_array($function, $args) {                              
    if (false === strpos($function, '::')) {                                  
        $reflection = new ReflectionFunction($function);                      
    } else {                                                                  
        $reflection = new ReflectionMethod(...explode('::', $function));      
    }                                                                         
    $assoc = [];                                                              
    foreach ($reflection->getParameters() as $i => $parameter) {              
        $assoc[$parameter->getName()] = $args[$i];                            
    }                                                                         
    return $assoc;                                                            
}                                                                             
                                                                              
function f($x, $y) { return args_to_assoc_array(__METHOD__, func_get_args()); }
class A {                                                                     
    function m($z) { return args_to_assoc_array(__METHOD__, func_get_args()); }
}                                                                             
var_dump(f(7, 2), (new A)->m(4));

Output for 5.6.38, 7.0.33, 7.1.25 - 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14: array(2) { ["x"]=> int(7) ["y"]=> int(2) } array(1) { ["z"]=> int(4) }

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