How to remove spaces and newlines from strings in php

php method to remove spaces and newlines in strings: This can be achieved through regular expressions, such as [preg_replace('//s*/', '', $str);]. It can also be implemented through the PHP_EOL variable, such as [str_replace(PHP_EOL, '', $str);].

The specific method is as follows:

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1. Use str_replace to replace

$str = str_replace(array("\r\n", "\r", "\n"), "", $str);

2. Use regular replacement

$str = preg_replace('//s*/', '', $str);

3. Use variables defined by php (recommended)

$str = str_replace(PHP_EOL, '', $str);

Of course we can define him as a function and then replace them together so that this code snippet can be reused.

function trimall($str){
    $qian=array(" ","　","\t","\n","\r");
    return str_replace($qian, '', $str);   
}

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