From 452f8a81d94380d02f163d110ab3ba4f2c22ea24 Mon Sep 17 00:00:00 2001
From: myvesta <38690722+myvesta@users.noreply.github.com>
Date: Fri, 14 Apr 2023 16:21:00 +0200
Subject: [PATCH] php myvesta_str_substring

---
 func/string.php | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/func/string.php b/func/string.php
index a38e068e..9e531fb8 100644
--- a/func/string.php
+++ b/func/string.php
@@ -248,3 +248,19 @@ function myvesta_str_lowercase() {
     }
     return strtolower($text);
 }
+
+function myvesta_str_substring() {
+    global $myvesta_stdin;
+    $args=func_get_args();
+    $args_i=-1;
+    if ($myvesta_stdin!='') {
+        $text=$myvesta_stdin;
+    } else {
+        $args_i++; $text=$args[$args_i];
+    }
+    $args_i++; $start=$args[$args_i];
+    $args_i++; $length=null; if (!empty($args[$args_i])) $length=intval($args[$args_i]);
+    
+    if ($length===null) return substr($text, $start);
+    if ($length!==null) return substr($text, $start, $length);
+}