Common string processing code snippets in PHP _php tutorial

Remove HTML Tags
Copy CodeThe code is as follows:
$text = Strip_tags ($input, "");

The above function is mainly used strip_tags, the specific use of the instructions reference.
Returns the text between the $start and the $end
Copy CodeThe code is as follows:
function Getbetween ($content, $start, $end) {
$r = Explode ($start, $content);
if (Isset ($r [1])) {
$r = Explode ($end, $r [1]);
return $r [0];
}
Return ';
}

Convert URLs to Links
Copy CodeThe code is as follows:
$url = "Jean-baptiste Jung (http://www.jb51.net)";
$url = Preg_replace ("#http://([a-z0-9./-]+) #", ' $ A ', $url);

The Shard string is 140 characters
Copy CodeThe code is as follows:
function Split_to_chunks ($to, $text) {
$total _length = (140-strlen ($to));
$text _arr = Explode ("", $text);
$i = 0;
$message [0]= "";
foreach ($text _arr as $word) {
if (strlen ($message [$i]. $word. ") <= $total _length) {
if ($text _arr[count ($text _arr)-1] = = $word) {
$message [$i]. = $word;
} else {
$message [$i]. = $word. ' ';
}
} else {
$i + +;
if ($text _arr[count ($text _arr)-1] = = $word) {
$message [$i] = $word;
} else {
$message [$i] = $word. ' ';
}
}
}
return $message;
}

Remove a URL from a string
Copy CodeThe code is as follows:
$string = Preg_replace ('/\b (https?| Ftp|file): \/\/[-a-z0-9+&@#\/%?=~_|$!:,.;] *[a-z0-9+&@#\/%=~_|$]/i ', ', $string);

Convert string to SEO friendly string
Copy CodeThe code is as follows:
function slug ($str) {
$str = Strtolower (Trim ($STR));
$str = preg_replace ('/[^a-z0-9-]/', '-', $str);
$str = preg_replace ('/-+/', "-", $str);
return $str;
}

Parse CSV file
Copy CodeThe code is as follows:
$fh = fopen ("Contacts.csv", "R");
while ($line = Fgetcsv ($fh, 1000, ",")) {
echo "Contact: {$line [1]}";
}

String search
Copy CodeThe code is as follows:
function contains ($STR, $content, $ignorecase =true) {
if ($ignorecase) {
$str = Strtolower ($STR);
$content = Strtolower ($content);
}
Return Strpos ($content, $str)? True:false;
}

Checks if a string begins
Copy CodeThe code is as follows:
function String_begins_with ($needle, $haystack {
Return (substr ($haystack, 0, strlen ($needle)) = = $needle);
}

Extract the email address from the string
Copy CodeThe code is as follows:
function Extract_emails ($STR) {
This regular expression extracts all emails from a string:
$regexp = '/([a-z0-9_\.\-]) +\@ ([[a-z0-9\-]) +\.) + ([a-z0-9]{2,4}) +/i ';
Preg_match_all ($regexp, $str, $m);

return isset ($m [0])? $m [0]: Array ();
}

$test _string = ' This is a test string ...

test1@example.org

Test different formats:
test2@example.org;
Foobar


Strange formats:
test5@example.org
test6[at]example.org
Test7@example.ne t.org.com
test8@ example.org
Test9@!foo!. ORG

foobar
';

Print_r (extract_emails ($test _string));

http://www.bkjia.com/phpjc/324426.html Span id= "Indexurl" itemprop= "Indexurl" >www.bkjia.com true http://www.bkjia.com/phpjc/324426.html techarticle remove HTML tag copy code code as follows: $text = Strip_tags ($input, ""); The above function is mainly used strip_tags, the specific use of the instructions reference. Return between $start and $end ...

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