01-06-2017
You do not need to escape it in awk. With awk a single character field separator, that is not a space character, is not treated as a regular expression string, but as a literal character.
Quote:
An extended regular expression can be used to separate fields by assigning a string containing the expression to the built-in variable
FS, either directly or as a consequence of using the
-F sepstring option. The default value of the
FS variable shall be a single <space>. The following describes
FS behavior:
1. If
FS is a null string, the behavior is unspecified.
2. If
FS is a single character:
a. If FS is <space>, skip leading and trailing <blank> and <newline> characters; fields shall be delimited by sets of one or more <blank> or <newline> characters.
b. Otherwise, if FS is any other character c, fields shall be delimited by each single occurrence of c.
3. Otherwise, the string value of
FS shall be considered to be an extended regular expression. Each occurrence of a sequence matching the extended regular expression shall delimit fields.
awk:regular expressions
Last edited by Scrutinizer; 01-06-2017 at 12:21 PM..
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FGETCSV(3) 1 FGETCSV(3)
fgetcsv - Gets line from file pointer and parse for CSV fields
SYNOPSIS
array fgetcsv (resource $handle, [int $length], [string $delimiter = ","], [string $enclosure = '"'], [string $escape = "
DESCRIPTION
Similar to fgets(3) except that fgetcsv(3) parses the line it reads for fields in CSV format and returns an array containing the fields
read.
PARAMETERS
o $handle
- A valid file pointer to a file successfully opened by fopen(3), popen(3), or fsockopen(3).
o $length
- Must be greater than the longest line (in characters) to be found in the CSV file (allowing for trailing line-end characters).
It became optional in PHP 5. Omitting this parameter (or setting it to 0 in PHP 5.1.0 and later) the maximum line length is not
limited, which is slightly slower.
o $delimiter
- The optional $delimiter parameter sets the field delimiter (one character only).
o $enclosure
- The optional $enclosure parameter sets the field enclosure character (one character only).
o $escape
- The optional $escape parameter sets the escape character (one character only).
RETURN VALUES
Returns an indexed array containing the fields read.
Note
A blank line in a CSV file will be returned as an array comprising a single null field, and will not be treated as an error.
Note
If PHP is not properly recognizing the line endings when reading files either on or created by a Macintosh computer, enabling the
auto_detect_line_endings run-time configuration option may help resolve the problem.
fgetcsv(3) returns NULL if an invalid $handle is supplied or FALSE on other errors, including end of file.
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.3.0 | |
| | |
| | The $escape parameter was added |
| | |
| 5.1.0 | |
| | |
| | The $length is now optional. Default is 0, mean- |
| | ing no length limit. |
| | |
| 4.3.5 | |
| | |
| | fgetcsv(3) is now binary safe |
| | |
+--------+---------------------------------------------------+
EXAMPLES
Example #1
Read and print the entire contents of a CSV file
<?php
$row = 1;
if (($handle = fopen("test.csv", "r")) !== FALSE) {
while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) {
$num = count($data);
echo "<p> $num fields in line $row: <br /></p>
";
$row++;
for ($c=0; $c < $num; $c++) {
echo $data[$c] . "<br />
";
}
}
fclose($handle);
}
?>
NOTES
Note
Locale setting is taken into account by this function. If $LANG is e.g. en_US.UTF-8, files in one-byte encoding are read wrong by
this function.
SEE ALSO
str_getcsv(3), explode(3), file(3), pack(3), fputcsv(3).
PHP Documentation Group FGETCSV(3)