Truncation of five kinds of strings

1. Strpos function
Strpos (String,find,start)

Example:
<?php Echo Strpos ("Hello world!", "Wo");
Output 6

2. substr function
SUBSTR (String,start,length)

Where start is the parameter
Positive number-starts at the specified position in the string
Negative number-starts at the specified position from the end of the string
0-Starts at the first character in a string

<?php echo substr ("Hello world!", 6,5); ?>
Output World
3. strstr function
The Strstr () function searches for the first occurrence of a string in another string.
The function returns the remainder of the string (from the matching point). returns false if the searched string is not found.

Strstr ('[email protected]', ' @ ', TRUE); Parameter set True to return the header before the lookup value @, ABC
Strstr (' zhang@jbxue.com ', ' @ '); The default returns the trailing end after the lookup value @, @jbxue. Co

4.STRRCHR ()

STRRCHR (String,char)

The STRRCHR () function finds the last occurrence of a string in another string and returns all characters from that position to the end of the string.

If it fails, it returns false.

strrchr("Hello world!","world");? >

Output:

world!

5.

Similar functions :STRCHR (),

Find the 12th string where it appears, and then intercept to the end!

Truncation of five kinds of strings