On page 131, the fwrite() function has a TIP that reads:
To read the entire file into a string, use the function filesize().
// file.txt contains the sentence: Hello World! $filename = 'file.txt'; $file = fopen($filename, 'r'); $string = fread( $file, filesize($filename) ); var_dump($string); // file.txt now contains at the end: Hello World!
You’ll notice that this is the same tip as fread() and doesn’t belong. It should be considered ‘removed’.
Some quick corrections for the Function Index:
preg_match_all: 157-158
array_combine: 73
array_key_exists: 79-80
Thanks to John for submitting this correction!
In the Function Index (pg. 161), array_key_exists() is listed as page 82. However, it is actually on page 79.
Feel free to submit a correction yourself if you find any!
In the book, the print_r() function is described as follows:
Output the contents of $variable . Typically used to display the contents of an array.
However, there is also an optional flag for the print_r() function that makes the function return the output rather than printing it to the screen. Therefore, the section of the book should be amended as follows:
return – [optional] $boolean default: FALSE, print output
Output the contents of $variable. Typically used to display the contents of an array. If return is set to TRUE, print_r() returns the output rather than displaying it, such as when storing it in a variable.
The function has the following correct syntax:
mysql_result(resource, row[, column])
However, in the explanation paragraph, 2nd sentence, it uses the term field erroneously instead of the term column. It should read as follows:
If column is specified instead of the value of the
first column, the specified column is retrieved (can be referenced by number
starting with 0 or by name/alias).
It’s the little things, like changing the term used to be clearer to the reader and forgetting to update everything.
