From d4bc04dbe5279bee4b3cbb69407d9cb99d05530b Mon Sep 17 00:00:00 2001
From: lzh <18320341470>
Date: Tue, 17 Jun 2025 09:14:47 +0800
Subject: [PATCH] common_func

---
 common_fun/string_func.go | 50 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 common_fun/string_func.go

diff --git a/common_fun/string_func.go b/common_fun/string_func.go
new file mode 100644
index 0000000..194f6a2
--- /dev/null
+++ b/common_fun/string_func.go
@@ -0,0 +1,50 @@
+package cf
+
+import (
+	"math/rand"
+	"regexp"
+)
+
+// 是否是手机号
+func IsMobile(str string) bool {
+	return regexp.MustCompile(`^1[3-9]\d{9}$`).MatchString(str)
+}
+
+// 随机字符串
+var letters = []rune("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
+
+// 获取随机字符串
+func StrRand(strLen int) string {
+	randBytes := make([]rune, strLen)
+	for i := range randBytes {
+		randBytes[i] = letters[rand.Intn(len(letters))]
+	}
+	return string(randBytes)
+}
+
+// 随机字母字符串
+var charLetters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
+
+// 随机字母字符串
+func StrCharRand(strLen int) string {
+	randBytes := make([]rune, strLen)
+	for i := range randBytes {
+		randBytes[i] = charLetters[rand.Intn(len(charLetters))]
+	}
+	return string(randBytes)
+}
+
+// 随机数字字符串
+// 第一位不能是0
+func StrNumberRand(strLen int) string {
+	numberLetters := []rune("0123456789")
+	randBytes := make([]rune, strLen)
+	for i := range randBytes {
+		if i == 0 {
+			randBytes[i] = letters[rand.Intn(9)]
+		} else {
+			randBytes[i] = letters[rand.Intn(len(numberLetters))]
+		}
+	}
+	return string(randBytes)
+}