Php string comparison

Source: Internet
Author: User
Tags strcmp trim

A simple string is equivalent to operator (=.
*/

$ Str1 = "test ";
$ Str2 = "test ";
If ($ str1 = "test") echo "OK-1 ";
If ($ str1 = $ str2) echo "OK-2 ";

/*
If the string is greater than or less than the comparison value, the strcmp function is used to return <0 if str1 is smaller than str2> 0, if str1 is greater than str2, and 0
*/

$ Str1 = "test ";
$ Str2 = "test ";
$ Str3 = "apple ";
$ Str4 = "zebra ";
If (strcmp ($ str1, $ str2) = 0) echo "OK ";
If (strcmp ($ str1, "test") = 0) echo "OK ";
If (strcmp ($ str1, $ str3)> 0) echo "$ str1> $ str3 ";
If (strcmp ($ str1, $ str4) <0) echo "$ str1 <$ str4 ";


/*
*/

$ Str1 = "test ";
$ Str2 = "test ";
If ($ str1 = $ str2) echo "OK-1 ";
If ($ str1 = trim ($ str2) echo "OK-2 ";
If (strcmp ($ str1, $ str2) = 0) echo "OK-3 ";
If (strcmp ($ str1, trim ($ str2) = 0) echo "OK-4 ";

Related Article

E-Commerce Solutions

Leverage the same tools powering the Alibaba Ecosystem

Learn more >

Apsara Conference 2019

The Rise of Data Intelligence, September 25th - 27th, Hangzhou, China

Learn more >

Alibaba Cloud Free Trial

Learn and experience the power of Alibaba Cloud with a free trial worth $300-1200 USD

Learn more >

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.