Add comment

ZK-ke · Nov 19, 2018 · 75672e5 · 75672e5
1 parent c59892c
commit 75672e5
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/php.go b/php.go
@@ -1620,6 +1620,9 @@ func Empty(val interface{}) bool {
 }
 
 // is_numeric()
+// Numeric strings consist of optional sign, any number of digits, optional decimal part and optional exponential part.
+// Thus +0123.45e6 is a valid numeric value.
+// In PHP hexadecimal (e.g. 0xf4c3b00c) is not supported, but IsNumeric is supported.
 func IsNumeric(val interface{}) bool {
 	switch val.(type) {
 	case int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64: