From 291b5081432c90fc629bcf9f3326aed3347e7b19 Mon Sep 17 00:00:00 2001
From: Fredrik Sundin <fredrik.sundin@internet24.se>
Date: Wed, 19 Aug 2020 22:41:08 +0000
Subject: [PATCH] Replace array_search to optimize large arrays

---
 src/SimpleXLSXGen.php | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/SimpleXLSXGen.php b/src/SimpleXLSXGen.php
index 46a83e4..0d0b346 100644
--- a/src/SimpleXLSXGen.php
+++ b/src/SimpleXLSXGen.php
@@ -162,6 +162,7 @@ class SimpleXLSXGen {
 		}
 
 		$SI = [];
+		$SI_KEYS = [];
 		$COLS = [];
 		$ROWS = [];
 		if ( count($this->rows)  ) {
@@ -212,10 +213,15 @@ class SimpleXLSXGen {
 						} else {
 							$ct = 's'; // shared string
 							$v = str_replace(['&','<','>'],['&amp;','&lt;','&gt;'], $v);
-							$cv             = array_search( $v, $SI, true );
+							$cv = false;
+							if ( isset($SI_KEYS[$v]) ) {
+								$cv = $SI_KEYS[$v];
+							}
+
 							if ( $cv === false ) {
 								$SI[] = $v;
 								$cv  = count( $SI ) - 1;
+								$SI_KEYS[$v] = $cv;
 							}
 						}
 					} elseif ( is_int( $v ) || is_float( $v ) ) {