About thinkPHP's built-in string interception function
This article mainly introduces the usage of thinkPHP's built-in string interception function. It analyzes the function and specific usage of thinkPHP's built-in string interception function in the form of examples, as well as the source code modification techniques for unable to add ellipses. Friends in need can refer to it. Next
The example in this article describes the usage of thinkPHP's built-in string interception function. Share it with everyone for your reference, the details are as follows:
thinkphp has a built-in template engine that is comparable to smarty, which brings us great convenience. The same goes for calling functions. You can call the functions you need just like smarty, and the official has built-in some commonly used functions for everyone to call.
For example, the string interception function we are talking about today can be written like this in the thinkphp template engine: {$vo.title|msubstr=0,5,'utf-8′,false} As for {$vo. title}Everyone must be familiar with this. Let’s talk about the following function msubstr. What it means is to intercept the string $vo.title, starting from 0 characters and intercepting 5 characters. UTF-8 encoding is used, and the ellipsis is not displayed after interception by default. If you want to display the ellipsis, just change false to true.
Function explanation:
msubstr($str, $start=0, $length, $charset="utf-8", $suffix=true)
## Parameter function:
$str: String to be intercepted $start=0: Starting position, default starts from 0
$length: Interception length
$charset="utf-8": Character encoding, default UTF -8
$suffix=true: Whether to display an ellipse after the intercepted character, the default is true to display, false to not display
ps: If not If it is called normally, it means that you have not loaded the function library. You can use Load('extend'); to load the function and just put it in the action~!
After trial: The official msubstr function seems to be unable to add an ellipse anyway. I found a modification method on the official website forum, and it can be used normally after testing~! Modify the msubstr function of the Common\extend.php file to the following code:function msubstr($str, $start=0, $length, $charset="utf-8", $suffix=true)
{
if(function_exists("mb_substr")){
if($suffix)
return mb_substr($str, $start, $length, $charset)."...";
else
return mb_substr($str, $start, $length, $charset);
}
elseif(function_exists('iconv_substr')) {
if($suffix)
return iconv_substr($str,$start,$length,$charset)."...";
else
return iconv_substr($str,$start,$length,$charset);
}
$re['utf-8'] = "/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xff][\x80-\xbf]{3}/";
$re['gb2312'] = "/[\x01-\x7f]|[\xb0-\xf7][\xa0-\xfe]/";
$re['gbk'] = "/[\x01-\x7f]|[\x81-\xfe][\x40-\xfe]/";
$re['big5'] = "/[\x01-\x7f]|[\x81-\xfe]([\x40-\x7e]|\xa1-\xfe])/";
preg_match_all($re[$charset], $str, $match);
$slice = join("",array_slice($match[0], $start, $length));
if($suffix) return $slice."…";
return $slice;
}About the table method of ThinkPHP CURD method
Use ThinkPHP’s built-in ThinkAjax to implement asynchronous transmission technology Implementation
The above is the detailed content of About thinkPHP's built-in string interception function. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
Tips for dynamically creating new functions in golang functions
Apr 25, 2024 pm 02:39 PM
Go language provides two dynamic function creation technologies: closure and reflection. closures allow access to variables within the closure scope, and reflection can create new functions using the FuncOf function. These technologies are useful in customizing HTTP routers, implementing highly customizable systems, and building pluggable components.
Considerations for parameter order in C++ function naming
Apr 24, 2024 pm 04:21 PM
In C++ function naming, it is crucial to consider parameter order to improve readability, reduce errors, and facilitate refactoring. Common parameter order conventions include: action-object, object-action, semantic meaning, and standard library compliance. The optimal order depends on the purpose of the function, parameter types, potential confusion, and language conventions.
How to write efficient and maintainable functions in Java?
Apr 24, 2024 am 11:33 AM
The key to writing efficient and maintainable Java functions is: keep it simple. Use meaningful naming. Handle special situations. Use appropriate visibility.
Complete collection of excel function formulas
May 07, 2024 pm 12:04 PM
1. The SUM function is used to sum the numbers in a column or a group of cells, for example: =SUM(A1:J10). 2. The AVERAGE function is used to calculate the average of the numbers in a column or a group of cells, for example: =AVERAGE(A1:A10). 3. COUNT function, used to count the number of numbers or text in a column or a group of cells, for example: =COUNT(A1:A10) 4. IF function, used to make logical judgments based on specified conditions and return the corresponding result.
Comparison of the advantages and disadvantages of C++ function default parameters and variable parameters
Apr 21, 2024 am 10:21 AM
The advantages of default parameters in C++ functions include simplifying calls, enhancing readability, and avoiding errors. The disadvantages are limited flexibility and naming restrictions. Advantages of variadic parameters include unlimited flexibility and dynamic binding. Disadvantages include greater complexity, implicit type conversions, and difficulty in debugging.
What is the difference between custom PHP functions and predefined functions?
Apr 22, 2024 pm 02:21 PM
The difference between custom PHP functions and predefined functions is: Scope: Custom functions are limited to the scope of their definition, while predefined functions are accessible throughout the script. How to define: Custom functions are defined using the function keyword, while predefined functions are defined by the PHP kernel. Parameter passing: Custom functions receive parameters, while predefined functions may not require parameters. Extensibility: Custom functions can be created as needed, while predefined functions are built-in and cannot be modified.
C++ Function Exception Advanced: Customized Error Handling
May 01, 2024 pm 06:39 PM
Exception handling in C++ can be enhanced through custom exception classes that provide specific error messages, contextual information, and perform custom actions based on the error type. Define an exception class inherited from std::exception to provide specific error information. Use the throw keyword to throw a custom exception. Use dynamic_cast in a try-catch block to convert the caught exception to a custom exception type. In the actual case, the open_file function throws a FileNotFoundException exception. Catching and handling the exception can provide a more specific error message.
Things to note when Golang functions receive map parameters
Jun 04, 2024 am 10:31 AM
When passing a map to a function in Go, a copy will be created by default, and modifications to the copy will not affect the original map. If you need to modify the original map, you can pass it through a pointer. Empty maps need to be handled with care, because they are technically nil pointers, and passing an empty map to a function that expects a non-empty map will cause an error.
