Php If String Contains Letters

To check if a string contains a character of a specific case you can use strpos.

Php if string contains letters. Software development php checking if a string contains a character could be accomplished easily with a regular expression or you can use the built in php functions. This is a php tutorial on how to check if a string contains a given substring. The strpos function returns the position of the first occurrence of a substring in a string. The strspn function returns the number of characters found in the string that contains only characters from the charlist parameter.

Use the strcspn function to return the number of characters found in a string before any part of the specified characters are found. This function is binary safe. The string arf12 does not consist of all letters. Also note that string positions start at 0 and not 1.

Admin april 10 2020 leave a comment. If you want your check to be case insensitive then you can use php s stristr function like so. Fare care stare etc. Use the php strpos function.

For example you want to run a specific line of code only if an input string contains another substring in it. The string kjgwzc consists of all letters. You could use regular expressions as it s better for word matching compared to strpos as mentioned by other users a strops check for are will also return true for strings such as. A case insensitive check using the stristr function.

This tutorial will help you to check if a string contains any substring in php programming language. These unintended matches can simply be avoided in regular expression by using word boundaries. If the substring is not found it returns false.