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                            **定義和用法**

> strlen() 函數返回字符串的長度。

**語法**

`strlen(string)`

| 參數 | 描述 |
|--------|--------|
| string  | 必需。規定要檢查的字符串。 | 
* * * * *

> `例子`
~~~
<?php
echo strlen("Hello world!");
?>
~~~
> 輸出：
> 12

* * * * *

`說明：獲取字符串長度，有多少個字符，空格也算，標點符號也計算`
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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