PHP 2 ways to remove leading and trailing spaces _php tutorial

PHP 2 ways to remove kinsoku and trailing spaces

This article mainly introduces the PHP 2 ways to remove the leading and trailing spaces, this paper gives the use of preg_replace replacement, trim function two methods and give an example, the need for friends can refer to the following

Seemingly simple question, in fact, there is a bit of a pit, the first place to escape the space, not a string, directly with trim () is not to go off.

1, replace with Preg_replace

The code is as follows:

$test = "Dfadad on the relationship between the Sanying and the responsible people 775FD";
$test = Preg_replace ('/^ (|\s) *| (|\s) *$/', ', $test);
Var_dump ($test);

The results are as follows:

String ' Dfadad on the relationship between the responsible people and Sanying 775FD ' (length=35)

This method is provided by the small partners inside the group, which expresses thanks. Recommend this method, with versatility

2,trim method

The code is as follows:

$test = "Dfadad 3333adf775fd";
$test = Trim (Html_entity_decode ($test), Chr (0xc2). Chr (0xa0));
Var_dump ($test);

The results are as follows:

String ' Dfadad 3333adf775fd ' (length=19)

This method is from the official PHP manual, if it is UTF8 code, using this method, there is no problem. If gbk,gb2312, it will appear garbled. There is also the json_encode, if this function is gbk,gb2312, the Chinese characters will be replaced with NULL. It is recommended to use UTF8 encoding.

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