diff --git a/ext/soap/php_schema.c b/ext/soap/php_schema.c
index 17ece4fe770f8..423714545ae30 100644
--- a/ext/soap/php_schema.c
+++ b/ext/soap/php_schema.c
@@ -92,6 +92,13 @@ static encodePtr get_create_encoder(sdlPtr sdl, sdlTypePtr cur_type, const xmlCh
 	return enc;
 }
 
+/* Necessary for some error paths to avoid leaking persistent memory. */
+static void requestify_string(xmlChar **str) {
+	xmlChar *copy = (xmlChar *) estrdup((const char *) *str);
+	xmlFree(*str);
+	*str = copy;
+}
+
 static void schema_load_file(sdlCtx *ctx, xmlAttrPtr ns, xmlChar *location, xmlAttrPtr tns, int import) {
 	if (location != NULL &&
 	    !zend_hash_str_exists(&ctx->docs, (char*)location, xmlStrlen(location))) {
@@ -104,22 +111,35 @@ static void schema_load_file(sdlCtx *ctx, xmlAttrPtr ns, xmlChar *location, xmlA
 		sdl_restore_uri_credentials(ctx);
 
 		if (doc == NULL) {
+			requestify_string(&location);
 			soap_error1(E_ERROR, "Parsing Schema: can't import schema from '%s'", location);
 		}
 		schema = get_node(doc->children, "schema");
 		if (schema == NULL) {
+			requestify_string(&location);
 			xmlFreeDoc(doc);
 			soap_error1(E_ERROR, "Parsing Schema: can't import schema from '%s'", location);
 		}
 		new_tns = get_attribute(schema->properties, "targetNamespace");
 		if (import) {
 			if (ns != NULL && (new_tns == NULL || xmlStrcmp(ns->children->content, new_tns->children->content) != 0)) {
-				xmlFreeDoc(doc);
-				soap_error2(E_ERROR, "Parsing Schema: can't import schema from '%s', unexpected 'targetNamespace'='%s'", location, ns->children->content);
+				requestify_string(&location);
+				if (new_tns == NULL) {
+					xmlFreeDoc(doc);
+					soap_error2(E_ERROR, "Parsing Schema: can't import schema from '%s', missing 'targetNamespace', expected '%s'", location, ns->children->content);
+				} else {
+					/* Have to make a copy to avoid a UAF after freeing `doc` */
+					const char *target_ns_copy = estrdup((const char *) new_tns->children->content);
+					xmlFreeDoc(doc);
+					soap_error3(E_ERROR, "Parsing Schema: can't import schema from '%s', unexpected 'targetNamespace'='%s', expected '%s'", location, target_ns_copy, ns->children->content);
+				}
 			}
 			if (ns == NULL && new_tns != NULL) {
+				requestify_string(&location);
+				/* Have to make a copy to avoid a UAF after freeing `doc` */
+				const char *target_ns_copy = estrdup((const char *) new_tns->children->content);
 				xmlFreeDoc(doc);
-				soap_error2(E_ERROR, "Parsing Schema: can't import schema from '%s', unexpected 'targetNamespace'='%s'", location, new_tns->children->content);
+				soap_error2(E_ERROR, "Parsing Schema: can't import schema from '%s', unexpected 'targetNamespace'='%s', expected no 'targetNamespace'", location, target_ns_copy);
 			}
 		} else {
 			new_tns = get_attribute(schema->properties, "targetNamespace");
@@ -128,6 +148,7 @@ static void schema_load_file(sdlCtx *ctx, xmlAttrPtr ns, xmlChar *location, xmlA
 					xmlSetProp(schema, BAD_CAST("targetNamespace"), tns->children->content);
 				}
 			} else if (tns != NULL && xmlStrcmp(tns->children->content, new_tns->children->content) != 0) {
+				requestify_string(&location);
 				xmlFreeDoc(doc);
 				soap_error1(E_ERROR, "Parsing Schema: can't include schema from '%s', different 'targetNamespace'", location);
 			}
diff --git a/ext/soap/tests/bugs/bug62900.phpt b/ext/soap/tests/bugs/bug62900.phpt
new file mode 100644
index 0000000000000..c78afda5304af
--- /dev/null
+++ b/ext/soap/tests/bugs/bug62900.phpt
@@ -0,0 +1,95 @@
+--TEST--
+Bug #62900 (Wrong namespace on xsd import error message)
+--EXTENSIONS--
+soap
+--INI--
+soap.wsdl_cache_enabled=0
+--FILE--
+<?php
+
+$wsdl_with_ns = <<<XML
+<definitions xmlns="http://schemas.xmlsoap.org/wsdl/" xmlns:xs="http://www.w3.org/2001/XMLSchema" targetNamespace="http://test-uri">
+	<types>
+		<xs:schema targetNamespace="http://test-uri" elementFormDefault="qualified">
+			<import namespace="http://www.w3.org/XML/1998/namespace" schemaLocation="bug62900.xsd" />
+		</xs:schema>
+	</types>
+</definitions>
+XML;
+
+$wsdl_without_ns = <<<XML
+<definitions xmlns="http://schemas.xmlsoap.org/wsdl/" xmlns:xs="http://www.w3.org/2001/XMLSchema" targetNamespace="http://test-uri">
+	<types>
+		<xs:schema elementFormDefault="qualified">
+			<import schemaLocation="bug62900.xsd" />
+		</xs:schema>
+	</types>
+</definitions>
+XML;
+
+$xsd_with_wrong_ns = <<<XML
+<!DOCTYPE xs:schema PUBLIC "-//W3C//DTD XMLSCHEMA 200102//EN" "XMLSchema.dtd">
+<xs:schema targetNamespace="http://www.w3.org/XML/1998/namespacex" xmlns:xs="http://www.w3.org/2001/XMLSchema" xml:lang="en"/>
+XML;
+
+$xsd_without_ns = <<<XML
+<!DOCTYPE xs:schema PUBLIC "-//W3C//DTD XMLSCHEMA 200102//EN" "XMLSchema.dtd">
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xml:lang="en"/>
+XML;
+
+$combinations = [
+    [$wsdl_with_ns, $xsd_with_wrong_ns],
+    [$wsdl_with_ns, $xsd_without_ns],
+    [$wsdl_without_ns, $xsd_with_wrong_ns],
+    [$wsdl_without_ns, $xsd_without_ns],
+];
+
+chdir(__DIR__);
+
+$args = ["-d", "display_startup_errors=0", "-d", "extension_dir=" . ini_get("extension_dir"), "-d", "extension=" . (substr(PHP_OS, 0, 3) == "WIN" ? "php_" : "") . "soap." . PHP_SHLIB_SUFFIX];
+if (php_ini_loaded_file()) {
+    // Necessary such that it works from a development directory in which case extension_dir might not be the real extension dir
+    $args[] = "-c";
+    $args[] = php_ini_loaded_file();
+}
+
+foreach ($combinations as list($wsdl, $xsd)) {
+    file_put_contents(__DIR__."/bug62900.wsdl", $wsdl);
+    file_put_contents(__DIR__."/bug62900.xsd", $xsd);
+
+    $proc = proc_open([PHP_BINARY, ...$args, __DIR__.'/bug62900_run'], [1 => ["pipe", "w"], 2 => ["pipe", "w"]], $pipes);
+    echo stream_get_contents($pipes[1]);
+    fclose($pipes[1]);
+    proc_close($proc);
+}
+
+?>
+--CLEAN--
+<?php
+@unlink(__DIR__."/bug62900.wsdl");
+@unlink(__DIR__."/bug62900.xsd");
+?>
+--EXPECTF--
+Fatal error: Uncaught SoapFault exception: [WSDL] SOAP-ERROR: Parsing Schema: can't import schema from '%sbug62900.xsd', unexpected 'targetNamespace'='http://www.w3.org/XML/1998/namespacex', expected 'http://www.w3.org/XML/1998/namespace' in %s:%d
+Stack trace:
+#0 %s(%d): SoapClient->__construct(%s)
+#1 {main}
+  thrown in %s on line %d
+
+Fatal error: Uncaught SoapFault exception: [WSDL] SOAP-ERROR: Parsing Schema: can't import schema from '%sbug62900.xsd', missing 'targetNamespace', expected 'http://www.w3.org/XML/1998/namespace' in %s:%d
+Stack trace:
+#0 %s(%d): SoapClient->__construct(%s)
+#1 {main}
+  thrown in %s on line %d
+
+Fatal error: Uncaught SoapFault exception: [WSDL] SOAP-ERROR: Parsing Schema: can't import schema from '%sbug62900.xsd', unexpected 'targetNamespace'='http://www.w3.org/XML/1998/namespacex', expected no 'targetNamespace' in %s:%d
+Stack trace:
+#0 %s(%d): SoapClient->__construct(%s)
+#1 {main}
+  thrown in %s on line %d
+
+Fatal error: Uncaught SoapFault exception: [WSDL] SOAP-ERROR: Parsing WSDL: Couldn't bind to service in %s:%d
+Stack trace:
+#0 %s(%d): SoapClient->__construct(%s)
+#1 {main}
+  thrown in %s on line %d
diff --git a/ext/soap/tests/bugs/bug62900_run b/ext/soap/tests/bugs/bug62900_run
new file mode 100644
index 0000000000000..0b7f7a0f33a98
--- /dev/null
+++ b/ext/soap/tests/bugs/bug62900_run
@@ -0,0 +1,2 @@
+<?php
+new SoapClient(__DIR__."/bug62900.wsdl");