The difference between "=" and "=" is simply that the former emphasizes that the "identical (identical, identical)" type also requires the same; the latter requires "equal (equal)" and the value is the same. Or use strcmp to determine, but this can
The examples in this article describe the comparison usage of strcmp () and strcasecmp () function strings in PHP. Share to everyone for your reference, specific as follows:
The strcmp () function in PHP is used to compare two strings (case
Use "= =" to judge, as for it and "= =" The difference, simple is the former emphasis on "identical (same, exactly the same)" type also requires the same, the latter requires "equal (equal)", the value is the same. Or use strcmp to judge, but this
The similar_text () function calculates the number of matching characters for two strings.
This function can also calculate the similarity between two strings (expressed in percentages ).
SyntaxSimilar_text (string1, string2, percent)
Note: The
The function prototype for strcmp () is as follows ()int strcmp (string str1,string str2)The function requires two parameter strings for comparison, and if the two strings are equal, the function returns 0, if the dictionary order str1 after str2
This article analyses the usage of PHP string comparison function. Share to everyone for your reference, specific as follows:
You can use "= =" to compare strings directly, but sometimes you might want to do more complex string comparisons, such as
Modify tcpdump with current tcpdump-3.9.4tcpdump.ccaseT: if (strcasecmp (optarg, vat) 0) then; elseif (strcasecmp (optarg, wb) 0) packettypePT_WB; elseif (strcasecmp (optarg, rpc)
ModifyTcpdump, Currently usedTcpdump-3.9.4
Tcpdump. c
Case 'T ':If
PHP itself can be implemented in two ways: implicit type conversion and explicit type conversion.
1. Implicit type conversions
For example
Here $a is implicitly converted into a string, the source code is implemented as follows
Differences and conversion methods of various data types in PHP can be implemented through implicit type conversion and explicit type conversion:
1. implicit type conversion
For example
$ A is implicitly converted into a string. the
PHP itself can be implemented in two ways: implicit type conversion and explicit type conversion.1. Implicit type conversionsFor exampleHere $a is implicitly converted into a string, the source code is implemented as followsif (Unexpected (z_type_p (
ASP function Code:
Copy Code code as follows:
function Checkip (checkstring) ' uses regular to determine whether IP is legal
Dim Re1
Set Re1=new REGEXP
Re1.pattern= "^[0-9]{1,3}. [0-9] {1,3}. [0-9] {1,3}. [0-9] {1,3}$ "
Encapsulation of Data StreamsI,
Mediaextractor is generated by the data source datasource.
Mediaextractor: Create (datasource. The create method generates the corresponding mediaextractor in two steps:
1. Use datasource-> sniff to detect Data Types
2
Experimental Report of Nanjing University of Information EngineeringExperiment name Class and Object 2 experimental date 2018-4-17 score Guide Teacher Shan Department of Soft College professional embedded + soft-embedded grade 2017 shift
(1
1. stagefright IntroductionThe android froyo version number multimedia engine has changed. Is it new? By default, Android chooses stagefright and does not abandon opencore completely. It mainly creates an OMX layer, but references the OMX-component
1. stagefright IntroductionThe multimedia engine of Android froyo version has been changed and added to the stagefright framework. By default, Android chooses stagefright and does not abandon opencore completely. It mainly implements an OMX layer,
Asp function code:Copy codeThe Code is as follows:Function checkip (checkstring) 'uses regular expressions to determine whether the IP address is valid.Dim re1Set re1 = new RegExpRe1.pattern = "^ [0-9] {1, 3 }. [0-9] {1, 3 }. [0-9] {1, 3 }. [0-9] {1,
ASP function Code:
Copy CodeThe code is as follows:
function Checkip (checkstring) ' use regular to determine whether IP is legitimate
Dim Re1
Set Re1=new REGEXP
Re1.pattern= "^[0-9]{1,3}. [0-9] {1,3}. [0-9] {1,3}. [0-9] {1,3}$
Asp function code:
Copy codeThe Code is as follows: function checkip (checkstring) 'uses regular expressions to determine whether the IP address is valid.
Dim re1
Set re1 = new RegExp
Re1.pattern = "^ [0-9] {1, 3 }. [0-9] {1, 3 }. [0-9] {1, 3 }. [0-9
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