diff --git a/Zend/zend_builtin_functions.c b/Zend/zend_builtin_functions.c
index 300adf400e1d9..a8cc127683a8a 100644
--- a/Zend/zend_builtin_functions.c
+++ b/Zend/zend_builtin_functions.c
@@ -1495,7 +1495,7 @@ ZEND_FUNCTION(get_resource_type)
 }
 /* }}} */
 
-/* {{{ proto array get_resources([string resouce_type])
+/* {{{ proto array get_resources([string resource_type])
    Get an array with all active resources */
 ZEND_FUNCTION(get_resources)
 {
diff --git a/Zend/zend_generators.c b/Zend/zend_generators.c
index ce681557df9ea..4ce4e4bbfa346 100644
--- a/Zend/zend_generators.c
+++ b/Zend/zend_generators.c
@@ -1136,7 +1136,7 @@ void zend_register_generator_ce(void) /* {{{ */
 	zend_ce_generator->serialize = zend_class_serialize_deny;
 	zend_ce_generator->unserialize = zend_class_unserialize_deny;
 
-	/* get_iterator has to be assigned *after* implementing the inferface */
+	/* get_iterator has to be assigned *after* implementing the interface */
 	zend_class_implements(zend_ce_generator, 1, zend_ce_iterator);
 	zend_ce_generator->get_iterator = zend_generator_get_iterator;
 
diff --git a/ext/bz2/bz2_filter.c b/ext/bz2/bz2_filter.c
index bb001198f4266..0cb1729e00a40 100644
--- a/ext/bz2/bz2_filter.c
+++ b/ext/bz2/bz2_filter.c
@@ -24,7 +24,7 @@
 /* {{{ data structure */
 
 enum strm_status {
-    PHP_BZ2_UNITIALIZED,
+    PHP_BZ2_UNINITIALIZED,
     PHP_BZ2_RUNNING,
     PHP_BZ2_FINISHED
 };
@@ -89,7 +89,7 @@ static php_stream_filter_status_t php_bz2_decompress_filter(
 
 		bucket = php_stream_bucket_make_writeable(buckets_in->head);
 		while (bin < bucket->buflen) {
-			if (data->status == PHP_BZ2_UNITIALIZED) {
+			if (data->status == PHP_BZ2_UNINITIALIZED) {
 				status = BZ2_bzDecompressInit(streamp, 0, data->small_footprint);
 
 				if (BZ_OK != status) {
@@ -117,7 +117,7 @@ static php_stream_filter_status_t php_bz2_decompress_filter(
 			if (status == BZ_STREAM_END) {
 				BZ2_bzDecompressEnd(&(data->strm));
 				if (data->expect_concatenated) {
-					data->status = PHP_BZ2_UNITIALIZED;
+					data->status = PHP_BZ2_UNINITIALIZED;
 				} else {
 					data->status = PHP_BZ2_FINISHED;
 				}
@@ -347,7 +347,7 @@ static php_stream_filter *php_bz2_filter_create(const char *filtername, zval *fi
 			}
 		}
 
-		data->status = PHP_BZ2_UNITIALIZED;
+		data->status = PHP_BZ2_UNINITIALIZED;
 		fops = &php_bz2_decompress_ops;
 	} else if (strcasecmp(filtername, "bzip2.compress") == 0) {
 		int blockSize100k = PHP_BZ2_FILTER_DEFAULT_BLOCKSIZE;
diff --git a/ext/opcache/Optimizer/block_pass.c b/ext/opcache/Optimizer/block_pass.c
index baf01bbb3627a..59429082f7cc3 100644
--- a/ext/opcache/Optimizer/block_pass.c
+++ b/ext/opcache/Optimizer/block_pass.c
@@ -1872,7 +1872,7 @@ void zend_optimize_cfg(zend_op_array *op_array, zend_optimizer_ctx *ctx)
 			if (!(b->flags & ZEND_BB_REACHABLE)) {
 				continue;
 			}
-			/* we track data dependencies only insight a single basic block */
+			/* we track data dependencies only inside a single basic block */
 			if (!(b->flags & ZEND_BB_FOLLOW) ||
 			    (b->flags & ZEND_BB_TARGET)) {
 				/* Skip continuation of "extended" BB */
diff --git a/ext/spl/spl_directory.c b/ext/spl/spl_directory.c
index 8b4c2560e6e18..8ede8a31296e8 100644
--- a/ext/spl/spl_directory.c
+++ b/ext/spl/spl_directory.c
@@ -216,7 +216,7 @@ static inline void spl_filesystem_object_get_file_name(spl_filesystem_object *in
 				if (intern->file_name) {
 					efree(intern->file_name);
 				}
-				/* if there is parent path, ammnd it, otherwise just use the given path as is */
+				/* if there is parent path, amend it, otherwise just use the given path as is */
 				if (path_len == 0) {
 					intern->file_name_len = spprintf(
 						&intern->file_name, 0, "%s", intern->u.dir.entry.d_name);