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Xiaobian to share with you how to use PHP fseek() function, I believe most people still do not know how, so share this article for everyone's reference, I hope you have a lot of harvest after reading this article, let's go to understand it together!

fseek();--Position in file pointer

int fseek ( resource $handle , int $offset [, int $whence = SEEK_SET ] )//Sets the file pointer position in the file associated with the handle. The new position is measured in bytes from the file header and is the position specified in whence plus offset.

Parameter: handle: file system pointer, which is the resource typically created by fopen().

offset: offset. To move to a position before the end of the file, pass offset a negative value and set whence to SEEK_END.

whence values are:

SEEK_SET -Set position equal to offset byte.

SEEK_CUR -Set the position to the current position plus offset.

SEEK_END -Set the position to the end of the file plus offset.

header("Content-Type:Text/html; charset=utf8");$fp = fopen('d:\test\test.txt','r');// read some data$data = fgets($fp, 4096);// move back to the beginning of the file// same as rewind($fp); fseek($fp, 0); above is "How PHP uses fseek() function" All of the content of this article, thank you for reading! I believe that everyone has a certain understanding, hope to share the content to help everyone, if you still want to learn more knowledge, welcome to pay attention to the industry information channel!

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