PHP: Undersøg om en variabel indeholdet et bestemt ord

ordene "hej" = ordet "hej"

if ( strpos( $test, "hej" ) !== false ) {  // bemærk !== (2 lighedstegn)
    // ja, det variabel indeholder "hej";
}

<?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";
}

// We can search for the character, ignoring anything before the offset
$newstring = 'abcdef abcdef';
$pos = strpos($newstring, 'a', 1); // $pos = 7, not 0
?> 

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