How to search text usign php ?
I means :
<?php
$text ="hello World!";
if ($text contains "world") {
echo "True";
}
?>
views:
52answers:
3
+2
A:
What you need is strstr()(or stristr(), like LucaB pointed out). Use it like this:
if(strstr($text, "world")) {/* do stuff */}
Gabi Purcaru
2010-10-16 20:25:57
strpos or stripos is better for the use case given by the OP - strstr goes to all the trouble of constructing a new string, only to be thrown away...
Paul Dixon
2010-10-16 20:30:47
Adding to Paul's comment, from the PHP manual for [`strstr()`](http://www.php.net/manual/en/function.strstr.php): "If you only want to determine if a particular needle occurs within haystack, use the faster and less memory intensive function `strpos()` instead."
BoltClock
2010-10-16 20:35:13
Well actually, it's an unreasonable microoptimization to use strpos over strstr given the original example. The returned string goes to waste, but basing the decision on 'performance' for a *single* text search doesn't seem sensible.
mario
2010-10-16 21:14:24
A:
This might be what you are looking for:
<?php
$text = 'This is a Simple text.';
// this echoes "is is a Simple text." because 'i' is matched first
echo strpbrk($text, 'mi');
// this echoes "Simple text." because chars are case sensitive
echo strpbrk($text, 'S');
?>
Is it?
Or maybe this:
<?php
$mystring = 'abc';
$findme = 'a';
$pos = strpos($mystring, $findme);
// Note our use of ===. Simply == would not work as expected
// because the position of 'a' was the 0th (first) character.
if ($pos === false) {
echo "The string '$findme' was not found in the string '$mystring'";
} else {
echo "The string '$findme' was found in the string '$mystring'";
echo " and exists at position $pos";
}
?>
Or even this
<?php
$email = '[email protected]';
$domain = strstr($email, '@');
echo $domain; // prints @example.com
$user = strstr($email, '@', true); // As of PHP 5.3.0
echo $user; // prints name
?>
You can read all about them in the documentation here:
Trufa
2010-10-16 20:27:51