JS intercepts strings. Common methods for intercepting strings.

1: explode splits the string

eg:

$str = xxx:abc;

$abc = explode(':','$str'); //What is obtained is an array

echo $abc[ 1]; //Output abc

Disadvantages: You must know the split point and the location of the required data

Advantages: Easy to understand

2: str_replace replaces the string part

eg:

$str = abcdefg;

$abc = str_replace('defg','','$str'); //Replace defg with empty

echo $abc; //Output abc

Disadvantages: The replaced part must be known

Advantages: Good Understanding

3: substr traverses the string

eg:

$str = abcdefg;

$re = array();

for($i = 0;$i < strlen($str); $ i++){ //Convert $str into an array

$re[] = substr($str,$i,1);

}

echo $re[0].$re[1].$re[ 2]; //Output abc

Disadvantages: Must know the entire string, low efficiency

Advantages: Splicing at will

The above introduces the common methods of intercepting strings with js, including the content of intercepting strings with js. I hope it will be helpful to friends who are interested in PHP tutorials.