PHP字符串处理函数示例学习笔记

    
        
        
    
    
        输出函数echo()
        $str = "Hello World";
        echo $str;
        ?>
    

    
        
        
    
    
        'PHP',"1"=>array('0'=>'P', '1'=>'H', '2'=>'P'));
        print_r($arr);
        ?>
    

    
        
        
    
    
        PHP100.COM";
        echo htmlspecialchars($str);
        ?>
    

    
        
        
    
    
        PHP + Apache + Mysql";
        echo strip_tags($str);
        echo "
";
        echo strip_tags($str, "");
        echo "
";
        echo strip_tags($str, "");
        ?>
    

    
        
        
    
    
        ";
        echo strlen(ltrim($str))."
";
        echo strlen(rtrim($str))."
";
        echo strlen(trim($str));
        ?>
    

    
        
        
    
    
        ";
        echo number_format($number,2);
        echo "
";
        echo number_format($number,2,",",".");
        ?>