Application of PHP strtok () function instance

The Strtok () function can control the tempo relative to explode (). Cut strings as needed. Its advantages are:


1, you can define more than one separator at a time. When a function is executed, it is cut by a single delimiter rather than by the entire separator, while the explode is cut by the entire separator string. Therefore, explode can be cut in Chinese, and strtok is not, will be garbled.


2, in the use while or for the strtok () traversal, you can change the separator at any time, you can break out at any time to stop cutting.


Example 1: Demo +explode in Chinese to cut


$string = "This is the Forum Forum Forums Forum H Administrator Forum members";


$arr = explode ("forum", $string);


foreach ($arr as $v)


{ 


echo $v. "  <br/> ";


} 


echo "-------------<br/>";


return:


This is the PHP


Forum


column


H Administrator


member


-------------  


Example 2: Demonstrates a replacement cutter, noting that the "H" separator is no longer in the back while. And just use a space.


$string = "This is the PHP Forum Forum Forums Forum Column Forum H Administrator Forum members";


$tok = strtok ($string, "H"); Space +h


$n = 1;


while ($tok!== false) {


echo "$tok <br/>";


$tok = Strtok (""); Space


//if ($n >2) break;  Can jump at any time.


//$n + +;


} 


echo "-------------<br/>";


return:


, this is P
.

P Forum


Forum


Forum Column


Forum H Administrator


Forum member


------------- 


Example 3: Demonstrates multiple separator characters.


$string = "this istan examplenstring";


$tok = strtok ($string, "NT"); #空格, linefeed, TAB


while ($tok!== false) {


echo "$tok <br/>";


$tok = Strtok ("NT");


} 


echo "-------------<br/>";


return:


this


is


an


Example


string


------------- 


$string = "ABCDE 123c4 99sadbc99b5232";


$tok = strtok ($string, "BC");


while ($tok!= "") {


echo "$tok <br/>";


$tok = strtok ("BC");


} 


echo "-------------<br/>";


return:


a


de 123


4 99sad


99


5232


------------- 


Example 4: Demo using for to traverse:


$line = "leontatkinsontleon@clearink.com";


for ($token = Strtok ($line, "T"); $token!= "" $token =strtok ("T")


{ 


Print ("token: $token <br>n");


} 


return:


Token:leon


Token:atkinson


token:leon@clearink.com