How to write an array variable to a file in PHP _php tutorial

How to write an array variable to a file in PHP

When you want to debug with PHP logging, or an AJAX request error. We generally write information into a specified file. The problem is then handled according to the appropriate information.

For example, the author likes to use Ajax to get the data, in the PHP script, add the following code:

$fp =fopen ('./a.txt ', ' a+b '); fwrite ($fp, $content); fclose ($FP);

However, there is a problem here. That is $content is an array to do?
You might say, I loop the output. What about multidimensional arrays?
I just need to be so tired to debug.

Here you can use Var_export ()

This function returns the structure information about the variable passed to the function, similar to Var_dump (), unlike the PHP code whose returned representation is normal.

You can return the representation of a variable by setting the second argument of the function to TRUE.

$fp =fopen ('./a.txt ', ' a+b '); fwrite ($fp, Var_export ($content, True)); fclose ($FP);

Note the second parameter of Var_export () needs to be set to true to indicate that the return value is obtained. Otherwise the direct output.

Also, if your $content is just an array and does not contain anything else, you can use Print_r (), and the second parameter of Print_r () is also set to true.

$fp =fopen ('./a.txt ', ' a+b '); fwrite ($fp, Print_r ($content, True)); fclose ($FP);

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