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The difference between explode() function and strtok() function in php
The difference between explode() function and strtok() function in php
php strtok()function and explode() function can both be used to split string, but there are some differences between them The difference is that compared to explode(), the strtok() function can control the rhythm. This article introduces the difference between the explode() function and strtok() function in PHP in detail!
Compared to explode() In other words, the strtok() function can control the rhythm. Cut the string as needed. The advantages are:
1. Multiple separators can be defined at one time. When the function is executed, it cuts by a single delimiter instead of the entire delimiter, while explode cuts by the entire delimiter string. For this reason, explode can be cut in Chinese, but strtok cannot and will be garbled.
2. When using while or for with strtok() to traverse, you can change the separator at any time, or use break to terminate cutting at any time.
Example 1: Demonstrates using Chinese explode to cut
$string = "这是PHP论坛 论坛版块 论坛栏目 论坛H管理员 论坛会员";
$arr = explode("论坛",$string);
foreach($arr as $v)
{
echo $v."<br />";
}
echo "-------------<br />";Running results:
这是PHP 版块 栏目 H管理员 会员 -------------
Example 2: Demonstrates changing the cutting character, please note that there is no longer "H" in WHILE " separator. Instead just use spaces.
$string = "这是PHP论坛 论坛版块 论坛栏目 论坛H管理员 论坛会员";
$tok = strtok($string, " H"); //空格+H $n=1;
while ($tok !== false) {
echo "$tok<br />";
$tok = strtok(" "); //空格 //if($n>2)break; //可以随时跳出。 //$n++; }
echo "-------------<br />";Running result:
这是P P论坛 论坛版块 论坛栏目 论坛H管理员 论坛会员 -------------
Example 3: Demonstrates multiple delimiters.
$string = "This is\tan example\nstring";
$tok = strtok($string, " \n\t"); #空格，换行，TAB while ($tok !== false) {
echo "$tok<br />";
$tok = strtok(" \n\t");
}
echo "-------------<br />";Running result:
This is an example string -------------
$string = "abcde 123c4 99sadbc99b5232";
$tok = strtok($string, "bc");
while ($tok !="") {
echo "$tok<br />";
$tok = strtok("bc");
}
echo "-------------<br />";Running result:
a de 123 4 99sad 99 5232 -------------
Example 4: Demonstrates using for to traverse:
$line = "leon\tatkinson\tleon@clearink.com";
for($token = strtok($line,"\t");$token!="";$token=strtok("\t"))
{
print("token: $token<BR>\n");
}Running result:
token: leon token: atkinson token: leon@clearink.com
Summary:
I believe that through studying this article, you will know the difference between strtok() and explode() functions, and you can use them at work. The specific situation depends on the use of a certain function. I hope it will be helpful to your work!
Related recommendations:
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