Php deletes the specified row of the txt file and reads the txt file data by row

This article describes how to delete the specified row of a txt file in php and read the txt file data by row. it involves php's operations on reading and deleting txt files by row, for more information about how to delete a txt file in php and read txt file data by row, see the following example. We will share this with you for your reference. The details are as follows:

Write values to txt files cyclically:

$ Keys = range (1,999); $ file = fopen('key_1101_.txt ', "w"); foreach ($ keys as $ key) {fwrite ($ file, "$ key \ r \ n");} fclose ($ file); $ f1 = fopen('key_11020..txt ', 'r'); while (! Feof ($ f1) {$ line = fgets ($ f1); $ line = trim ($ line); $ arr [] = $ line ;} $ keys = array_filter ($ arr); var_dump ($ keys );

Read txt document data by line:

$ F1 = fopen('key_11020..txt ', 'r'); while (! Feof ($ f1) {$ line = fgets ($ f1); $ line = trim ($ line); $ arr [] = $ line ;} $ keys = array_filter ($ arr); var_dump ($ keys); die;

I hope this article will help you with PHP programming.

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