How does php remove the leftmost space
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In php, you can remove the leftmost space by using the ltrim function, which uses the syntax "ltrim(string,charlist)", and the parameter string specifies the string to be checked.
Operating environment: Windows 7 system, PHP7.1, Dell G3 computer.
In php, you can remove the leftmost space by using the ltrim function.
The ltrim() function removes white space or other predefined characters from the left side of a string.
Correlation function:
rtrim() -removes white space or other predefined characters from the right side of the string
trim() -removes white space or other predefined characters from both sides of a string
syntax
ltrim(string,charlist)
parameters
string Required. Specify the string to check.
Charlist is optional. Specifies which characters to remove from a string. If this parameter is omitted, all of the following characters are removed:
"\0" - NULL
"\t" -tab character
"\n" -newline
"\x0B" -Vertical tab
"\r" -Enter
" " -Space
Remove spaces to the left of string:
HTML output of the above code (see source code):
Without ltrim: Hello World!
Use ltrim: Hello World!
Browser output of the above code:
No ltrim: Hello World! Use ltrim: Hello World!
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