Added 7/s

Day 7/Part_1.php

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+<?php
+# 55.25.68
+$in = file("input.txt");
+
+function formatbags($in)
+{
+    $bags = array();
+    foreach ($in as &$rule) {
+        $rule = explode(" ", str_replace(".", "", str_replace(",", "", trim($rule))));
+        $bag = array_shift($rule) . " " . array_shift($rule);
+        array_shift($rule);
+        array_shift($rule);
+        $bags[$bag] = array();
+        while (count($rule) > 0) {
+            if ($rule[0] == "no") {
+                break;
+            } else {
+                $num = array_shift($rule);
+                $type = array_shift($rule) . " " . array_shift($rule);
+                array_shift($rule);
+                $bags[$bag][$type] = $num;
+            }
+        }
+    }
+    return $bags;
+}
+
+function updatec($data, $bag, &$answer)
+{
+    foreach ($data as $dk => $dv) {
+        if (array_key_exists($bag, $dv)) {
+            array_push($answer, $dk);
+        }
+    }
+}
+
+$data = formatbags($in);
+$ac = 0;
+$answer = array();
+
+foreach ($data as $dk => $dv) {
+    if (array_key_exists("shiny gold", $dv)) {
+        array_push($answer, $dk);
+    }
+}
+
+while ($ac !== count($answer)) {
+    $ac = count($answer);
+    $answer = array_unique($answer);
+    foreach ($answer as $bag) {
+        updatec($data, $bag, $answer);
+    }
+}
+
+$answer = array_unique($answer);
+echo count($answer). "\n";

Day 7/Part_2.php

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+<?php
+
+$in = file("input.txt");
+
+function formatbags($in)
+{
+    $bags = array();
+    foreach ($in as &$rule) {
+        $rule = explode(" ", str_replace(".", "", str_replace(",", "", trim($rule))));
+        $bag = array_shift($rule) . " " . array_shift($rule);
+        array_shift($rule);
+        array_shift($rule);
+        $bags[$bag] = array();
+        while (count($rule) > 0) {
+            if ($rule[0] == "no") {
+                break;
+            } else {
+                $num = array_shift($rule);
+                $type = array_shift($rule) . " " . array_shift($rule);
+                array_shift($rule);
+                $bags[$bag][$type] = $num;
+            }
+        }
+    }
+    return $bags;
+}
+
+
+
+function bc2($bag, $count, $data, &$s)
+{
+    $c2 = 0;
+    foreach ($data[$bag] as $sk => $sv) {
+        $c2 = $c2 + $sv * $count;
+        if (array_key_exists($sk, $s)) {
+            $s[$sk] = $s[$sk] + ($sv * $count);
+        }else{
+            $s[$sk] = $sv * $count;
+        }
+    }
+    print $c2 . "\n";
+    return $c2;
+
+}
+
+
+$data = formatbags($in);
+
+$c = 0;
+
+$s = array("shiny gold" => 1);
+
+while (count($s) > 0) {
+
+    foreach ($s as $bag => $no) {
+        $c = $c + bc2($bag,$no,$data,$s);
+        
+    }
+   
+    array_shift($s);
+
+}
+
+echo $c;

Day 8/Part_1.php

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+<?php
+$in = file("input.txt");
+
+foreach ($in as &$code) {
+    $code = explode(" ", trim($code));
+    $code[1] = (int)$code[1];
+    $code[2] = 0;
+}
+
+
+$x = 0;
+
+$acc = 0;
+
+while ($x < count($in)) {
+    $in[$x][2]++;
+
+    if ($in[$x][2] > 1) {
+        print $acc . "\n";
+
+        die();
+    }
+
+    switch ($in[$x][0]) {
+
+        case "acc";
+            $acc = $acc + $in[$x][1];
+            $x++;
+            break;
+        case "jmp";
+            $x = $x + $in[$x][1];
+            break;
+        case "nop";
+            $x++;
+            break;
+    }
+}

Day 8/Part_2.php

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+<?php
+$in = file("input.txt");
+
+foreach ($in as &$code) {
+    $code = explode(" ", trim($code));
+    $code[1] = (int)$code[1];
+    $code[2] = 0;
+    if ($code[0] == "nop" or $code[0] == "jmp") {
+        $code[3] = 0;
+    } else {
+        $code[3] = 2;
+    }
+}
+
+function swap(&$code)
+{
+    foreach ($code as &$ins) {
+        $ins[2] = 0;
+        if ($ins[3] == 1) {
+            if ($ins[0] == "nop") {
+                $ins[0] = "jmp";
+                $ins[3] = 2;
+            } else {
+                $ins[0] = "nop";
+                $ins[3] = 2;
+            }
+        }
+    }
+    foreach ($code as &$ins) {
+        if ($ins[3] == 0) {
+            if ($ins[0] == "nop") {
+                $ins[0] = "jmp";
+                $ins[3] = 1;
+                break;
+            } else {
+                $ins[0] = "nop";
+                $ins[3] = 1;
+                break;
+            }
+        }
+    }
+}
+
+$x = 0;
+$acc = 0;
+
+while ($x < count($in)) {
+    $in[$x][2]++;
+
+    if ($in[$x][2] > 1) {
+        swap($in);
+        $x = 0;
+        $acc = 0;
+    }
+
+    switch ($in[$x][0]) {
+
+        case "acc";
+            $acc = $acc + $in[$x][1];
+            $x++;
+            break;
+        case "jmp";
+            $x = $x + $in[$x][1];
+            break;
+        case "nop";
+            $x++;
+            break;
+    }
+}
+
+
+
+
+
+if ($x == count($in)) {
+    print $acc . "\n";
+    print "done";
+}

README.md

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+
+|Day|Part 1|Part 2|
+|--|--|--|
+|1|:heavy_check_mark:|:heavy_check_mark:|
+|2|:heavy_check_mark:|:heavy_check_mark:|
+|3|:heavy_check_mark:|:heavy_check_mark:|
+|4|:heavy_check_mark:|:heavy_check_mark:|
+|5|:heavy_check_mark:|:heavy_check_mark:|
+|6|:heavy_check_mark:|:heavy_check_mark:|
+|7|:heavy_check_mark:|:x:|
+|8|:heavy_check_mark:|:heavy_check_mark:|