May I ask a function

royniqq

I am a novice in PHP. I can determine whether a variable $ a contains the character of $ b in another variable. What method can I use to achieve it, thank you

jinjialin

strpos

<? php
$ mystring = 'abc';
$ findme = 'a';
$ pos = strpos ($ mystring, $ findme);

// Note our use of ===. Simply == would not work as expected
// because the position of 'a' was the 0th (first) character.
if ($ pos === false) {
    echo "The string '$ findme' was not found in the string '$ mystring'";
} else {
    echo "The string '$ findme' was found in the string '$ mystring'";
    echo "and exists at position $ pos";
}

// We can search for the character, ignoring anything before the offset
$ newstring = 'abcdef abcdef';
$ pos = strpos ($ newstring, 'a', 1); // $ pos = 7, not 0
?>

jinjialin

strpos ($ b, $ a);
// Returns the position of a in b, or returns FLASE if not

迪迪安

Someone has asked the same question before. The solution is to specify a flag variable in the previous function.jinjialinsaid the program, yes, you can use it after you understand the meaning inside

mxf9837z

The landlord asked if it contains the character of $ b in another variable,
strpos is the entire string

qijun2005

strpos