diff --git a/ext/standard/JitStrReplaceArray.php b/ext/standard/JitStrReplaceArray.php
index b9ed6609a66..3eb6e563b73 100644
--- a/ext/standard/JitStrReplaceArray.php
+++ b/ext/standard/JitStrReplaceArray.php
@@ -8,6 +8,7 @@
 use PHPCompiler\JIT\BasicBlockHelper;
 use PHPCompiler\JIT\Context;
 use PHPCompiler\JIT\HashTableHelper;
+use PHPCompiler\JIT\JitValueBox;
 use PHPCompiler\JIT\Variable;
 use PHPLLVM\Builder;
 use PHPLLVM\Value;
@@ -82,26 +83,13 @@ private static function buildReplaceHashTable(
         $context->builder->branchIf($isSet, $replaceBlock, $skipUnset);
 
         $context->builder->positionAtEnd($replaceBlock);
-        $entry = self::listEntryAt($context, $src, $srcIdx);
-        $valueMap = $context->structFieldMap['__value__'];
-        $typeByte = $context->builder->load(
-            $context->builder->structGep($entry, $valueMap['type'])
-        );
-        $i8 = $context->getTypeFromString('int8');
-        $isString = $context->builder->icmp(
-            Builder::INT_EQ,
-            $typeByte,
-            $i8->constInt(Variable::TYPE_STRING & 0xff, false)
-        );
-        $doReplaceBlock = BasicBlockHelper::append($context, 'str_replace_do_'.$id);
-        $context->builder->branchIf($isString, $doReplaceBlock, $skipUnset);
-
-        $context->builder->positionAtEnd($doReplaceBlock);
+        // php-src convert_to_string per array subject value (#27165).
         $strPtrTy = $context->getTypeFromString('__string__*');
         $itemResultSlot = $context->builder->alloca($strPtrTy, 1, 'str_replace_arr_item_'.$id);
-        $subject = $context->builder->call(
-            $context->lookupFunction('__value__readString'),
-            $entry
+        $entryBox = HashTableHelper::readIndexedToValueBox($context, $src, $srcIdx);
+        $subject = (new strval())->valueToString(
+            $context,
+            JitValueBox::pointer($context, $entryBox->value)
         );
         $itemCountSlot = null;
         if (null !== $countSlot) {
@@ -158,14 +146,4 @@ private static function buildReplaceHashTable(
 
         return $phi;
     }
-
-    private static function listEntryAt(Context $context, Value $ht, Value $index): Value
-    {
-        $map = $context->structFieldMap['__hashtable__'];
-        $values = $context->builder->load(
-            $context->builder->structGep($ht, $map['values'])
-        );
-
-        return $context->builder->inBoundsGep($values, $index);
-    }
 }
diff --git a/ext/standard/str_ireplace.php b/ext/standard/str_ireplace.php
index 6932a84af3f..efba56f734b 100644
--- a/ext/standard/str_ireplace.php
+++ b/ext/standard/str_ireplace.php
@@ -80,16 +80,12 @@ public function execute(Frame $frame): void
         $ht = new HashTable();
         $totalCount = 0;
         foreach ($subjectVar->toArray()->iterateKeyed(true) as [$key, $value]) {
-            if (Variable::TYPE_STRING !== $value->type) {
-                throw new \LogicException(
-                    'str_ireplace() array subject values must be strings in this compiler build'
-                );
-            }
+            // php-src php_str_replace_array: convert_to_string per array subject (#27165).
             $elemCount = 0;
             $replaced = self::replaceWithNeedles(
                 $searchNeedles,
                 $replaceOperand,
-                $value->toString(),
+                $value->resolveIndirect()->toString(null, $frame),
                 $elemCount
             );
             $totalCount += $elemCount;
diff --git a/ext/standard/str_replace.php b/ext/standard/str_replace.php
index 620d4b47279..b99ee0d488b 100644
--- a/ext/standard/str_replace.php
+++ b/ext/standard/str_replace.php
@@ -78,16 +78,12 @@ public function execute(Frame $frame): void
         $ht = new HashTable();
         $totalCount = 0;
         foreach ($subjectVar->toArray()->iterateKeyed(true) as [$key, $value]) {
-            if (Variable::TYPE_STRING !== $value->type) {
-                throw new \LogicException(
-                    'str_replace() array subject values must be strings in this compiler build'
-                );
-            }
+            // php-src php_str_replace_array: convert_to_string per array subject (#27165).
             $elemCount = 0;
             $replaced = self::replaceWithNeedles(
                 $searchNeedles,
                 $replaceOperand,
-                $value->toString(),
+                $value->resolveIndirect()->toString(null, $frame),
                 $elemCount
             );
             $totalCount += $elemCount;
diff --git a/test/compliance/cases/stdlib/str_replace_array_value_coerce.phpt b/test/compliance/cases/stdlib/str_replace_array_value_coerce.phpt
new file mode 100644
index 00000000000..6affbb0c1ef
--- /dev/null
+++ b/test/compliance/cases/stdlib/str_replace_array_value_coerce.phpt
@@ -0,0 +1,18 @@
+--TEST--
+stdlib str_replace/str_ireplace coerce non-string array subject values (#27165, ext/standard/string.c)
+--FILE--
+<?php
+var_export(str_replace('1', 'X', [12, '13']));
+echo "\n";
+var_export(str_ireplace('a', 'X', ['a', 12, 'A']));
+echo "\n";
+--EXPECT--
+array (
+  0 => 'X2',
+  1 => 'X3',
+)
+array (
+  0 => 'X',
+  1 => '12',
+  2 => 'X',
+)
diff --git a/test/compliance/cases/stdlib/str_replace_array_value_coerce_jit.phpt b/test/compliance/cases/stdlib/str_replace_array_value_coerce_jit.phpt
new file mode 100644
index 00000000000..6b36c8649aa
--- /dev/null
+++ b/test/compliance/cases/stdlib/str_replace_array_value_coerce_jit.phpt
@@ -0,0 +1,18 @@
+--TEST--
+stdlib str_replace/str_ireplace coerce non-string array subject values JIT (#27165, ext/standard/string.c)
+--FILE--
+<?php
+var_export(str_replace('1', 'X', [12, '13']));
+echo "\n";
+var_export(str_ireplace('a', 'X', ['a', 12, 'A']));
+echo "\n";
+--EXPECT--
+array (
+  0 => 'X2',
+  1 => 'X3',
+)
+array (
+  0 => 'X',
+  1 => '12',
+  2 => 'X',
+)
diff --git a/test/repro/issue_27165_str_replace_array_value_coerce.php b/test/repro/issue_27165_str_replace_array_value_coerce.php
new file mode 100644
index 00000000000..ae337bd2ac8
--- /dev/null
+++ b/test/repro/issue_27165_str_replace_array_value_coerce.php
@@ -0,0 +1,5 @@
+<?php
+var_export(str_replace('1', 'X', [12, '13']));
+echo "\n";
+var_export(str_ireplace('a', 'X', ['a', 12, 'A']));
+echo "\n";