Php string truncation (application and extension of substr)

Php string truncation (application and extension of substr)

Php can intercept Chinese or English strings. English is a little simple and Chinese is a little complicated. This article introduces substr functions and extends the functions. if you need them, for more information, see. Php does not have substring functions available directly, but has substr functions. The substr () function returns part of the string. Substr (string, start, length) string: string to be truncated start: positive number-start negative number at the specified position of the string-Start 0 from the specified position at the end of the string-start length at the first character in the string: Optional. Specifies the length of the string to be returned. The default value is until the end of the string. Positive number-return a negative number from the position of the start parameter-return from the end of the string When intercepting a Chinese string in php, you need to extend the function by yourself, for example: I hope the above code will help you.