adding more and update

Author: BaseMax

array_flip.php

@@ -0,0 +1,13 @@
+<?php
+// array_flip
+$names = [
+    "reza",
+    "hamid",
+    "ali",
+    "farzad",
+    "abbas",
+    "amirreza",
+    "far"
+];
+$names = array_flip($names);
+print_r($names);

call_user_func_array.php

@@ -0,0 +1,12 @@
+<?php
+// call_user_func_array
+function my_function($a, $b) {
+    return $a + $b;
+}
+var_dump( call_user_func_array("my_function", [1, 2]) );
+var_dump( call_user_func_array("my_function", [1, 2, 3, 4, 5]) );
+
+"my_function"(1, 2);
+
+$params = [1, 2];
+"my_function"($params[0], $params[1]);

file.txt

@@ -0,0 +1 @@
+Hello, World!Hi!

function.php

@@ -58,3 +58,33 @@ function my($number1, $number2, $fn) {
 };
 $sayHey("Rey");
 unset($sayHey);
+
+function sum(...$numbers) {
+    $sum = 0;
+    foreach ($numbers as $number) {
+        $sum += $number;
+    }
+    return $sum;
+}
+print sum(1, 2, 3, 4)."\n";
+
+function sum2($numbers) {
+    $sum = 0;
+    foreach ($numbers as $number) {
+        $sum += $number;
+    }
+    return $sum;
+}
+print sum2([1, 2, 3, 4])."\n";
+// print sum([1, 2, 3, 4])."\n";
+
+
+function func($a, $b, $c, int ...$numbers) {
+    $sum = 0;
+    foreach ($numbers as $number) {
+        $sum += ($number + $a - $b) * $c;
+    }
+    return $sum;
+}
+var_dump(func(1, 2, 3, 4, 5, 6, 7, 8, 9, 10));
+// var_dump(func(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, "hi"));

fwrite.php

@@ -0,0 +1,14 @@
+<?php
+// fwrite
+$f = fopen("file.txt", "w"); // write
+fwrite($f, "Hello World");
+fclose($f);
+
+file_put_contents("file.txt", "Hello, World!");
+file_get_contents("file.txt");
+
+
+
+file_put_contents("file.txt", "Hi!", FILE_APPEND);
+
+file_put_contents("music.mp3", file_get_contents("https://kharatha.com/Heyf2.mp3"));

phpinfo.php

@@ -0,0 +1,2 @@
+<?php
+phpinfo();

strrpos.php

@@ -0,0 +1,21 @@
+<?php
+// strrpos
+$str = "Hello World o o o o  o";
+$a = strrpos($str, "o");
+var_dump(strlen($str));
+var_dump($a);
+
+// offset
+$foo = "0123456789a123456789b123456789c";
+
+// Looking for '0' from the 0th byte (from the beginning)
+var_dump(strrpos($foo, '0', 0));
+// int(0)
+
+// Looking for '0' from the 1st byte (after byte "0")
+var_dump(strrpos($foo, '0', 1));
+// bool(false)
+
+// Looking for '7' from the 21th byte (after byte 20)
+var_dump(strrpos($foo, '7', 20));
+// int(27)