The segmentation and synthesis of PHP string

Eight, the string segmentation

Explode () function: Splits a string according to the specified rules. Returns an array.

Grammar:

Array explode (split identifier, string Str[,int limit])

Splits the string by the specified split identifier.

Cases:

<?php
$str = "Welcome to www.bianceng.cn!";
$arr =explode (".", $str);
echo "<pre>";
foreach ($arr as $key => $val) {
   echo $val. " <br/> ";
}
echo "</pre>";
?>

Output:

Welcome to www
Bianceng
cn!

Nine, String synthesis

Implode () function: This function can synthesize the contents of an array into a new string

Syntax format:

Sting Imgplode (separator, array name)

Function: Concatenate the contents of the array with the specified delimiter into a string

Cases:

<?php
$str = "Welcome to www.bianceng.cn!";
$arr = Explode (".", $str);
echo "<pre>";
foreach ($arr as $key => $val) {
    Echo $val. "<br/>";
}
echo "</pre>";
$str 1 = Implode ("_", $arr);
echo "<br/>". $STR 1; Output Welcome to Www_bianceng_cn!
?>