Add the text in between two text using php file handling
<p>My question we have file handling in php.In file handling we have create file,write file and update file.if i create the text file using php file handling and write into the file some Hello guys and close the file.I want to update the file but this time while update file i want to add the text in between Hello and guys.For example Hello hii guys.or guys word will be overwrtten by speed.Hello speed.</p>

<p>thanks please help me</p>
