How php removes variable spaces

This article mainly introduces php how to remove variable spaces, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let Xiaobian take you to understand.

Php removes variable spaces: 1, delete string spaces by trim method; 2, replace spaces with preg_replace method; 3, replace spaces with str_replace function.

This article operating environment: windows7 system, PHP7.1 version, DELL G3 computer

How does php remove variable spaces?

Php removes whitespace from a string

1. Common methods trim

Examples:

$test = "abc"; / / method 1: the function converts HTML entities to characters. $converted = html_entity_decode ($test), chr (0xc2) .chr (0xa0); / / method 2: $converted = strtr ($myHTML, array_flip (get_html_translation_table (HTML_ENTITIES, ENT_QUOTES)); / / php:45:string 'abc' (length=5) $converted = trim ($converted,chr (0xC2) .chr (0xA0)); / / should workvar_dump ($converted)

Hexadecimal conversion: 0xC2 to 0xA0 to space

2, replace with preg_replace

Examples:

$str = 'test'; $str = preg_replace (' /', $str); / / will be changed to 'test'3, replace with str_replace

Case study

$str= "t e st"; $str=str_replace ("",'', $str); echo $str thank you for reading this article carefully. I hope the article "how to remove variable spaces in php" shared by the editor will be helpful to you. At the same time, I hope you will support us and pay attention to the industry information channel. More related knowledge is waiting for you to learn!