Php reads data from a row of TEXT in a large file

Php reads data from a row of TEXT in a large file

Function get_line ($ file, $ line) {$ fp = fopen ($ file, 'r'); $ I = 0; while (! Feof ($ fp) {$ I ++; $ c = fgets ($ fp); if ($ I ==$ line) {echo $ c; break ;}}}

The efficiency of this method remains to be tested.

In an apache log file (450 MB)

Reading 20th rows is very fast 0.001039981842041

Read 200th rows 0.0033199787139893

It takes about 2nd seconds to read 0.30908799171448 million rows.

Reading 20th million rows and 2.5622429847717 seconds has reached an intolerable level.