PHP使用file_get_contents爆炸函数？

Question

   <?php
$str = "Hello world. It's a beautiful day.";
print_r (explode(" ",$str));
?>

The above code prints an array as an output.

If I use

<?php
$homepage = file_get_contents('http://www.example.com/data.txt');
print_r (explode(" ",$homepage));
    ?>

However it does not display individual numbers in the text file in the form of an array.

Ultimately I want to read numbers from a text file and print their frequency. The data.txt has 100,000 numbers. One number per line.

Answer 1

A new line is not a space. You have to explode at the appropriate new line character combination. E.g. for Linux:

explode("
",$homepage)

Alternatively, you can use preg_split and the character group \s which matches every white space character:

preg_split('/\s+/', $homepage);

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Another option (maybe faster) might be to use fgetcsv.