в 10:37, 26 мая 2010

2010-05-26T10:37:30Z

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2010-05-26T07:07:34Z

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==preg_grep==



<source lang="html4strict">

<?php
$foods = array("pasta", "steak", "fish", "potatoes");
$food = preg_grep("/^p/", $foods);
print_r($food);
?>

</source>

==preg_grep() function searches all elements of input_array, returning all elements matching the regexp pattern.==



<source lang="html4strict">

Its syntax is: array preg_grep (string pattern, array input_array)
<?
$foods = array("pasta", "steak", "fish", "potatoes");
$p_foods = preg_grep("/p(\w+)/", $foods);
$x = 0;
while ($x < sizeof($p_foods)) :
print $p_foods[$x]. "<br>";
$x++;
endwhile;
?>

</source>

==Quickly finding lines that match a pattern==



<source lang="html4strict">

<?
$pattern = "/\bo"reilly\b/i"; // only O"Reilly books
$ora_books = preg_grep($pattern, file("/path/to/your/file.txt"));
?>

</source>

==Using preg_grep()==



<source lang="html4strict">

<?
$text=<<<TEXT
"asdf.asdf,asdf!asdf
TEXT;
$words = preg_split("/[",.!\s]/", $text, -1, PREG_SPLIT_NO_EMPTY);
$double_letter_words = preg_grep("/([a-z])\\1/i",$words);
foreach ($double_letter_words as $word) {
print "$word\n";
}
?>

</source>

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PHP/String/preg grep - История изменений

в 10:37, 26 мая 2010

Admin: 1 версия