str_replace

mixed str_replace ( mixed $search , mixed $replace , mixed $subject [, int &$count ] )

<?php
//?Provides:?<body?text='black'>
$bodytag?=?str_replace("%body%",?"black",?"<body?text='%body%'>");

//?Provides:?Hll?Wrld?f?PHP
$vowels?=?array("a",?"e",?"i",?"o",?"u",?"A",?"E",?"I",?"O",?"U");
$onlyconsonants?=?str_replace($vowels,?"",?"Hello?World?of?PHP");

//?Provides:?You?should?eat?pizza,?beer,?and?ice?cream?every?day
$phrase??=?"You?should?eat?fruits,?vegetables,?and?fiber?every?day.";
$healthy?=?array("fruits",?"vegetables",?"fiber");
$yummy???=?array("pizza",?"beer",?"ice?cream");

$newphrase?=?str_replace($healthy,?$yummy,?$phrase);

//?Provides:?2
$str?=?str_replace("ll",?"",?"good?golly?miss?molly!",?$count);
echo?$count;
?>

<?php
//?Order?of?replacement
$str?????=?"Line?1\nLine?2\rLine?3\r\nLine?4\n";
$order???=?array("\r\n",?"\n",?"\r");
$replace?=?'<br?/>';

//?Processes?\r\n's?first?so?they?aren't?converted?twice.
$newstr?=?str_replace($order,?$replace,?$str);

//?Outputs?F?because?A?is?replaced?with?B,?then?B?is?replaced?with?C,?and?so?on...
//?Finally?E?is?replaced?with?F,?because?of?left?to?right?replacements.
$search??=?array('A',?'B',?'C',?'D',?'E');
$replace?=?array('B',?'C',?'D',?'E',?'F');
$subject?=?'A';
echo?str_replace($search,?$replace,?$subject);

//?Outputs:?apearpearle?pear
//?For?the?same?reason?mentioned?above
$letters?=?array('a',?'p');
$fruit???=?array('apple',?'pear');
$text????=?'a?p';
$output??=?str_replace($letters,?$fruit,?$text);
echo?$output;
?>