Php reading large text files


















Possible dupicate of: PHP - reading from the end of a text file — hippietrail. Add a comment. Active Oldest Votes. You can use fopen and fseek to navigate in file backwards from end. Improve this answer. Laurence Greenisha Greenisha 1, 10 10 silver badges 14 14 bronze badges. If the file ends in a newline, this snippet will just return the newline. I think initial value of -2 will cover first case. This is the best solution.

Minor update to this. Seems fseek uses ints internally which prevents you setting a position over on 32 bit setups. Show 4 more comments. Eran Galperin Eran Galperin But does it affects the real file or just the command does it virtually?

It depends how you interpret "can". You can absolutely do this without reading all the preceding lines, as suggested by you yourself in your last sentence. Rarst: Sure, you may use it with that license. I suppose me saying this like that is enough? Show 5 more comments. Following snippet worked for me.

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Linked 6. Related Hot Network Questions. Question feed. Stack Overflow works best with JavaScript enabled. Accept all cookies Customize settings. Imagine an application route brought us to this code. But instead of serving up a file from the local file system, we want to get it from a CDN.

The memory usage for this image is around KB. Now, how about we try to stream this instead? The memory usage is slightly less at KB , but the result is the same.

In fact, PHP provides a simple way to do this:. Imagine we wanted to compress our shakespeare. We might use the Zip extension:. This is a neat bit of code, but it clocks in at around We can do better, with filters:. We can then pipe this compressed data into another file.

This only uses KB. I know this is not the same format, or that there are upsides to making a zip archive. To define them, we need to create a new stream context:. The API endpoint is secure, but we still need to use the http context property as is used for http and https.

The details of its parameters are as follows. This function returns a string of lengthOfFile -1 from the file specified by the user if successful. It returns False on failure. The program below shows how we can use fgets function to read a large file line by line. We will use fopen and fclose functions to open and close a file respectively.



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