PHP func_get_args(), func_get_arg() and func_num_args() can be used to retrieve php function arguments inside a function. This may be useful in debugging. Here are code snippets for it.
func_get_args() example
<?php
function f1() {
$num = func_num_args();
$args = func_get_args();
print "num=$num\n";
print "====args====\n";
print_r($args);
}
f1("v1", "v2", "v3");
?>num=3
====args====
Array
(
[0] => v1
[1] => v2
[2] => v3
)
Env: PHP 7.4.33 (Linux)
func_get_args() and default value
In case a function argument has default value, func_get_args() is not impacted by it.
<?php
function f1($var1, $var2='some default') {
$num = func_num_args();
$args = func_get_args();
print "num=$num\n";
print "====args====\n";
print_r($args);
}
f1("v1");num=1
====args====
Array
(
[0] => v1
)
Env: PHP 7.4.33 (Linux)
