[SOLVED] Searching array elements in a string

[play_]

What's the best way for doing this?

I have this array:
[code]$keywords = array (
"and",      "del",      "from",      "not",      "while",
"as",        "elif",      "global",    "or",        "with",
"assert",    "else",      "if",        "pass",      "yield",
"break",    "except",    "import",    "print",
"class",    "exec",      "in",        "raise",
"continue",  "finally",  "is",        "return",
"def",      "for",      "lambda",    "try"
);[/code]

I would like to search for these words in a string (and hilite them).
I am thinking, i could count the array, and use a for loop and during each loop, search and replace an element with a hilited element.

Is there a better way?

[Clarkey_Boy]

I would personally use the following array:

$keywords = array (
0 => "and",      "del",      "from",      "not",      "while",
"as",        "elif",      "global",    "or",        "with",
"assert",    "else",      "if",        "pass",      "yield",
"break",    "except",    "import",    "print",
"class",    "exec",      "in",        "raise",
"continue",  "finally",  "is",        "return",
"def",      "for",      "lambda",    "try"
);

(it would then count up from 0)

Use the following code, where $searchstring is the string you want to search through:

for each($keywords As $no => $keyword)
{
str_replace($keyword, $keywordreplacement, $searchstring);
}

RC

[effigy]

Try[tt] preg_replace_callback [/tt]with[tt] /([a-z]+)/[/tt], where the callback checks to see if the match is in the array.

[fert]

http://us2.php.net/manual/en/function.in-array.php

[play_]

Thanks guys.
If anyone know which method is faster, spill it out ;)

[play_]

[quote author=fert link=topic=121454.msg499474#msg499474 date=1168227572]
http://us2.php.net/manual/en/function.in-array.php
[/quote]

I need to do the opposite of that. unless i can use an array inside in_array()

[Clarkey_Boy]

To me, my way is far easier to code and understand... but then I have never tried the preg_replace way - dont even know what it does.

RC