diff --git a/src/analyzer/custom_hook.rs b/src/analyzer/custom_hook.rs
index 1f027736..9309014d 100644
--- a/src/analyzer/custom_hook.rs
+++ b/src/analyzer/custom_hook.rs
@@ -152,6 +152,9 @@ pub trait InternalHook {
     ) -> bool {
         false
     }
+
+    #[allow(unused_variables)]
+    fn after_populate(&self, codebase: &CodebaseInfo, interner: &Interner) {}
 }
 
 pub trait CustomHook: InternalHook + Send + Sync + core::fmt::Debug {}
diff --git a/src/analyzer/function_analysis_data.rs b/src/analyzer/function_analysis_data.rs
index 995de0be..394023de 100644
--- a/src/analyzer/function_analysis_data.rs
+++ b/src/analyzer/function_analysis_data.rs
@@ -583,27 +583,34 @@ fn get_hakana_fixmes_and_ignores(
 ) -> BTreeMap<u32, Vec<(IssueKind, (u32, u32, u32, u32, bool))>> {
     let mut hakana_fixme_or_ignores = BTreeMap::new();
     for (pos, comment) in comments {
-        if let Comment::CmtBlock(text) = comment {
-            let trimmed_text = if let Some(trimmed_text) = text.strip_prefix('*') {
-                trimmed_text.trim()
-            } else {
-                text.trim()
-            };
-
-            if let Some(Ok(issue_kind)) = get_issue_from_comment(trimmed_text, all_custom_issues) {
-                hakana_fixme_or_ignores
-                    .entry(pos.line() as u32)
-                    .or_insert_with(Vec::new)
-                    .push((
-                        issue_kind,
-                        (
-                            pos.start_offset() as u32,
-                            pos.end_offset() as u32,
-                            pos.to_raw_span().start.beg_of_line() as u32,
-                            pos.end_offset() as u32,
-                            false,
-                        ),
-                    ));
+        match comment {
+            Comment::CmtBlock(text) => {
+                let trimmed_text = if let Some(trimmed_text) = text.strip_prefix('*') {
+                    trimmed_text.trim()
+                } else {
+                    text.trim()
+                };
+
+                if let Some(Ok(issue_kind)) =
+                    get_issue_from_comment(trimmed_text, all_custom_issues)
+                {
+                    hakana_fixme_or_ignores
+                        .entry(pos.line() as u32)
+                        .or_insert_with(Vec::new)
+                        .push((
+                            issue_kind,
+                            (
+                                pos.start_offset() as u32,
+                                pos.end_offset() as u32,
+                                pos.to_raw_span().start.beg_of_line() as u32,
+                                pos.end_offset() as u32,
+                                false,
+                            ),
+                        ));
+                }
+            }
+            Comment::CmtLine(_) => {
+                // do nothing — if we handle issues here things are much slower
             }
         }
     }
diff --git a/src/code_info/issue.rs b/src/code_info/issue.rs
index 46eaa6bf..f0923e43 100644
--- a/src/code_info/issue.rs
+++ b/src/code_info/issue.rs
@@ -15,6 +15,7 @@ use crate::{
 #[derive(Clone, PartialEq, Eq, Hash, Display, Debug, Serialize, Deserialize, EnumString)]
 pub enum IssueKind {
     AbstractInstantiation,
+    BannedFunction,
     ExtendFinalClass,
     CannotInferGenericParam,
     CustomIssue(Box<String>),
@@ -317,6 +318,10 @@ pub fn get_issue_from_comment(
         return Some(Ok(IssueKind::NoJoinInAsyncFunction));
     } else if trimmed_text.starts_with("HHAST_FIXME[FinalOrAbstractClass]") {
         return Some(Ok(IssueKind::MissingFinalOrAbstract));
+    } else if trimmed_text.starts_with("HHAST_FIXME[BannedFunctions]")
+        || trimmed_text.starts_with("HHAST_IGNORE_ERROR[BannedFunctions]")
+    {
+        return Some(Ok(IssueKind::BannedFunction));
     }
 
     None
diff --git a/src/file_scanner_analyzer/lib.rs b/src/file_scanner_analyzer/lib.rs
index 53aaf100..f5c91ad7 100644
--- a/src/file_scanner_analyzer/lib.rs
+++ b/src/file_scanner_analyzer/lib.rs
@@ -282,6 +282,10 @@ pub fn scan_and_analyze(
         cached_analysis.safe_symbol_members,
     );
 
+    for hook in &config.hooks {
+        hook.after_populate(&codebase, &interner);
+    }
+
     let populating_elapsed = populating_now.elapsed();
 
     if logger.can_log_timing() {