From: John <redacted>
Date: Wed, 18 Jul 2018 19:25:24 +0000 (-0500)
Subject: add PHP num2code and code2num
X-Git-Url: https://jfr.im/git/snippets.git/commitdiff_plain/d2b9dfab63daeebdedf37e00dc0d5d9219a501d4

add PHP num2code and code2num
---

diff --git a/snippets.php b/snippets.php
new file mode 100644
index 0000000..19bfdee
--- /dev/null
+++ b/snippets.php
@@ -0,0 +1,32 @@
+<?php
+function num2code($num, $dict) {
+	// Source: perl Acme::Tools
+	// License: GNU GPL v1+; Artistic License
+	if (!is_array($dict)) {
+		$dict = str_split($dict);
+	}
+	$base = count($dict);
+	$buf = array();
+	while ($num > 0) {
+		$buf[] = $dict[$num % $base];
+		$num = (int)($num/$base);
+		var_dump($num);
+	}
+	return implode(array_reverse($buf));
+}
+
+function code2num($str, $dict) {
+	// Source: perl Acme::Tools
+	// License: GNU GPL v1+; Artistic License
+	if (is_array($dict)) {
+		$dict = implode($dict);
+	}
+	$base = strlen($dict);
+	$buf = 0;
+	foreach (str_split($str) as $c) {
+		$buf = $buf*$base + strpos($dict, $c);
+	}
+	return $buf;
+}
+
+// vim: ts=4 nosmarttab noexpandtab