Question

I need to replace a word with another word. But

$var= str_replace($linklabel[$k], $linklabelmod[$k], $var);

is not giving the desired result. For example i have a string

$var="the theory of them thesis"; 
$linklabel[1]="the"; 
$linklabelmod[1]="hhh";

What i need is, i just want to replace the word “the”. But since “the” is repeated in “theory” “thesis” and “them”, all those starting three letters are also getting replaced. Then output becomes
$var=”hhh hhhory of hhhm hhhsis”;//wrong
But i need the output
$var=”hhh theory of them thesis”;//write
I am bad at explaining a question, plz excuse me…

Thanks in advance….

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From what I (paxdiablo) can gather from the OP’s comments, this is the code following modifications (still claimed not to work):

foreach($xpath->query('//a') as $element) {
    $linklabel[] = $element->textContent;
    $link[] = $element->getAttribute("href");
    $i=$i+1;
}
for($k=0;$k<$i;$k++) {
    $linklabelmod[$k] = str_replace($linklabel[$k], $linklabel[$k]."[$k]", $linklabel[$k]);
    $var = preg_replace ('/\b'.preg_quote($linklabel[$k]).'\b/', $linklabelmod[$k], $var);
}
print $var; //printing web page

Answer 1

Insert white space 🙂 if you want to use str_replace function

php > $var = "the theory of them thesis";

php > $var = str_replace(array(" the ", "the "), 'hhh', $var);

php > echo $var;