Categories:
.NET (357)
C (330)
C++ (183)
CSS (84)
DBA (2)
General (7)
HTML (4)
Java (574)
JavaScript (106)
JSP (66)
Oracle (114)
Perl (46)
Perl (1)
PHP (1)
PL/SQL (1)
RSS (51)
Software QA (13)
SQL Server (1)
Windows (1)
XHTML (173)
Other Resources:
What Is the Best Way to Test the strpos() Return Value
What Is the Best Way to Test the strpos() Return Value? - PHP Script Tips - PHP Built-in Functions for Strings
✍: FYIcenter.com
Because strpos() could two types of values, Integer and Boolean, you need to be careful about testing the return value. The best way is to use the "Identical(===)" operator. Do not use the "Equal(==)" operator, because it does not differentiate "0" and "false". Check out this PHP script on how to use strpos():
<?php $haystack = "needle234953413434516504381640386488129"; $pos = strpos($haystack, "needle"); if ($pos==false) { print("Not found based (==) test\n"); } else { print("Found based (==) test\n"); } if ($pos===false) { print("Not found based (===) test\n"); } else { print("Found based (===) test\n"); } ?>
This script will print:
Not found based (==) test Found based (===) test
Of course, (===) test is correct.
2007-04-21, 4980👍, 0💬
Popular Posts:
What are the different storage classes in C? C has three types of storage: automatic, static and all...
How To Add Column Headers to a Table? - XHTML 1.0 Tutorials - Understanding Tables and Table Cells I...
In below sample code if we create a object of class2 which constructor will fire first? Public Class...
What is effort variance? Effort Variance = (Actual effort – Estimated Effort) / Estimated Effort.
Which bit wise operator is suitable for turning off a particular bit in a number? The bitwise AND op...